197900959520 has 288 divisors, whose sum is σ = 531933671808. Its totient is φ = 69570547200.

The previous prime is 197900959513. The next prime is 197900959559. The reversal of 197900959520 is 25959009791.

197900959520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204654077 + ... + 204655043.

It is an arithmetic number, because the mean of its divisors is an integer number (1846991916).

Almost surely, 2^197900959520 is an apocalyptic number.

197900959520 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 197900959520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265966835904).

197900959520 is an abundant number, since it is smaller than the sum of its proper divisors (334032712288).

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

197900959520 is an equidigital number, since it uses as much as digits as its factorization.

197900959520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 56.

The spelling of 197900959520 in words is "one hundred ninety-seven billion, nine hundred million, nine hundred fifty-nine thousand, five hundred twenty".