172201050656 has 48 divisors (see below), whose sum is σ = 371341295640. Its totient is φ = 78241443840.

The previous prime is 172201050649. The next prime is 172201050661. The reversal of 172201050656 is 656050102271.

It can be written as a sum of positive squares in 4 ways, for example, as 172175203600 + 25847056 = 414940^2 + 5084^2 .

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, 5441915 + ... + 5473466.

Almost surely, 2^172201050656 is an apocalyptic number.

172201050656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172201050656 is an abundant number, since it is smaller than the sum of its proper divisors (199140244984).

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

172201050656 is a wasteful number, since it uses less digits than its factorization.

172201050656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915437 (or 10915429 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 172201050656 in words is "one hundred seventy-two billion, two hundred one million, fifty thousand, six hundred fifty-six".