172627668861 has 16 divisors (see below), whose sum is σ = 231398221824. Its totient is φ = 114471989424.

The previous prime is 172627668853. The next prime is 172627668919. The reversal of 172627668861 is 168866726271.

It is not a de Polignac number, because 172627668861 - 2³ = 172627668853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172627668795 and 172627668804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172627668761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685410 + ... + 902796.

It is an arithmetic number, because the mean of its divisors is an integer number (14462388864).

Almost surely, 2^172627668861 is an apocalyptic number.

It is an amenable number.

172627668861 is a deficient number, since it is larger than the sum of its proper divisors (58770552963).

172627668861 is a wasteful number, since it uses less digits than its factorization.

172627668861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218800.

The product of its digits is 16257024, while the sum is 60.

The spelling of 172627668861 in words is "one hundred seventy-two billion, six hundred twenty-seven million, six hundred sixty-eight thousand, eight hundred sixty-one".