172649387708 has 18 divisors (see below), whose sum is σ = 351464825376. Its totient is φ = 73992594648.

The previous prime is 172649387693. The next prime is 172649387717. The reversal of 172649387708 is 807783946271.

It is a super-2 number, since 2×172649387708² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 440431916 + ... + 440432307.

It is an arithmetic number, because the mean of its divisors is an integer number (19525823632).

Almost surely, 2^172649387708 is an apocalyptic number.

It is an amenable number.

172649387708 is an abundant number, since it is smaller than the sum of its proper divisors (178815437668).

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

172649387708 is a wasteful number, since it uses less digits than its factorization.

172649387708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880864241 (or 880864232 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 172649387708 in words is "one hundred seventy-two billion, six hundred forty-nine million, three hundred eighty-seven thousand, seven hundred eight".