196957031856 has 120 divisors (see below), whose sum is σ = 551519075520. Its totient is φ = 60540150528.

The previous prime is 196957031833. The next prime is 196957031867. The reversal of 196957031856 is 658130759691.

It is a self number, because there is not a number n which added to its sum of digits gives 196957031856.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8254215 + ... + 8278041.

It is an arithmetic number, because the mean of its divisors is an integer number (4595992296).

Almost surely, 2^196957031856 is an apocalyptic number.

196957031856 is a gapful number since it is divisible by the number (16) 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 196957031856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275759537760).

196957031856 is an abundant number, since it is smaller than the sum of its proper divisors (354562043664).

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

196957031856 is a wasteful number, since it uses less digits than its factorization.

196957031856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24883 (or 24864 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 60.

The spelling of 196957031856 in words is "one hundred ninety-six billion, nine hundred fifty-seven million, thirty-one thousand, eight hundred fifty-six".