172661051283688 has 64 divisors (see below), whose sum is σ = 359296156477440. Its totient is φ = 77128110360000.

The previous prime is 172661051283673. The next prime is 172661051283689. The reversal of 172661051283688 is 886382150166271.

It is not an unprimeable number, because it can be changed into a prime (172661051283689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42485508 + ... + 46371763.

It is an arithmetic number, because the mean of its divisors is an integer number (5614002444960).

Almost surely, 2^{172661051283688} is an apocalyptic number.

It is an amenable number.

172661051283688 is an abundant number, since it is smaller than the sum of its proper divisors (186635105193752).

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

172661051283688 is a wasteful number, since it uses less digits than its factorization.

172661051283688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88857670 (or 88857666 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 172661051283688 in words is "one hundred seventy-two trillion, six hundred sixty-one billion, fifty-one million, two hundred eighty-three thousand, six hundred eighty-eight".