207121607056172 has 12 divisors (see below), whose sum is σ = 365850315268200. Its totient is φ = 102592945550976.

The previous prime is 207121607056073. The next prime is 207121607056213. The reversal of 207121607056172 is 271650706121702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241964493797 + ... + 241964494652.

It is an arithmetic number, because the mean of its divisors is an integer number (30487526272350).

Almost surely, 2^{207121607056172} is an apocalyptic number.

It is an amenable number.

207121607056172 is a deficient number, since it is larger than the sum of its proper divisors (158728708212028).

207121607056172 is a wasteful number, since it uses less digits than its factorization.

207121607056172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483928988560 (or 483928988558 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 207121607056172 in words is "two hundred seven trillion, one hundred twenty-one billion, six hundred seven million, fifty-six thousand, one hundred seventy-two".