196909440000 has 1760 divisors, whose sum is σ = 859464883200. Its totient is φ = 39739392000.

The previous prime is 196909439999. The next prime is 196909440001. The reversal of 196909440000 is 44909691.

It is an interprime number because it is at equal distance from previous prime (196909439999) and next prime (196909440001).

It is a super-2 number, since 2×196909440000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196909440001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8561279989 + ... + 8561280011.

It is an arithmetic number, because the mean of its divisors is an integer number (488332320).

Almost surely, 2^196909440000 is an apocalyptic number.

196909440000 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 196909440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429732441600).

196909440000 is an abundant number, since it is smaller than the sum of its proper divisors (662555443200).

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

196909440000 is an equidigital number, since it uses as much as digits as its factorization.

196909440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 196909440000 in words is "one hundred ninety-six billion, nine hundred nine million, four hundred forty thousand".