195481954981656 has 128 divisors (see below), whose sum is σ = 620635559846400. Its totient is φ = 55846773889920.

The previous prime is 195481954981637. The next prime is 195481954981669. The reversal of 195481954981656 is 656189459184591.

195481954981656 is a `hidden beast` number, since 1 + 9 + 5 + 4 + 8 + 1 + 9 + 549 + 8 + 1 + 65 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10184686 + ... + 22241666.

It is an arithmetic number, because the mean of its divisors is an integer number (4848715311300).

Almost surely, 2^{195481954981656} is an apocalyptic number.

It is an amenable number.

195481954981656 is an abundant number, since it is smaller than the sum of its proper divisors (425153604864744).

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

195481954981656 is a wasteful number, since it uses less digits than its factorization.

195481954981656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12067726 (or 12067716 counting only the distinct ones).

The product of its digits is 3359232000, while the sum is 81.

The spelling of 195481954981656 in words is "one hundred ninety-five trillion, four hundred eighty-one billion, nine hundred fifty-four million, nine hundred eighty-one thousand, six hundred fifty-six".