196499489455440 has 640 divisors, whose sum is σ = 729171387187200. Its totient is φ = 48496147476480.

The previous prime is 196499489455427. The next prime is 196499489455453. The reversal of 196499489455440 is 44554984994691.

196499489455440 is a `hidden beast` number, since 1 + 9 + 6 + 4 + 9 + 9 + 489 + 45 + 54 + 40 = 666.

196499489455440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (196499489455427) and next prime (196499489455453).

It is a super-2 number, since 2×196499489455440² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 196499489455440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15661067247 + ... + 15661079793.

It is an arithmetic number, because the mean of its divisors is an integer number (1139330292480).

Almost surely, 2^{196499489455440} is an apocalyptic number.

196499489455440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196499489455440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364585693593600).

196499489455440 is an abundant number, since it is smaller than the sum of its proper divisors (532671897731760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196499489455440 is a wasteful number, since it uses less digits than its factorization.

196499489455440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22792 (or 22780 counting only the distinct ones).

The product of its (nonzero) digits is 8062156800, while the sum is 81.

The spelling of 196499489455440 in words is "one hundred ninety-six trillion, four hundred ninety-nine billion, four hundred eighty-nine million, four hundred fifty-five thousand, four hundred forty".