195151560656 has 40 divisors (see below), whose sum is σ = 431143670664. Its totient is φ = 84771717120.

The previous prime is 195151560589. The next prime is 195151560661. The reversal of 195151560656 is 656065151591.

It can be written as a sum of positive squares in 4 ways, for example, as 1477633600 + 193673927056 = 38440^2 + 440084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27591425 + ... + 27598496.

Almost surely, 2^195151560656 is an apocalyptic number.

195151560656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

195151560656 is an abundant number, since it is smaller than the sum of its proper divisors (235992110008).

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

195151560656 is a wasteful number, since it uses less digits than its factorization.

195151560656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55189959 (or 55189953 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 50.

The spelling of 195151560656 in words is "one hundred ninety-five billion, one hundred fifty-one million, five hundred sixty thousand, six hundred fifty-six".