172101072270100 has 72 divisors (see below), whose sum is σ = 374028618448800. Its totient is φ = 68735560483200.

The previous prime is 172101072270067. The next prime is 172101072270151. The reversal of 172101072270100 is 1072270101271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196579131 + ... + 197452669.

It is an arithmetic number, because the mean of its divisors is an integer number (5194841922900).

Almost surely, 2^{172101072270100} is an apocalyptic number.

172101072270100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172101072270100 is an abundant number, since it is smaller than the sum of its proper divisors (201927546178700).

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

172101072270100 is a wasteful number, since it uses less digits than its factorization.

172101072270100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876553 (or 876546 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 31.

The spelling of 172101072270100 in words is "one hundred seventy-two trillion, one hundred one billion, seventy-two million, two hundred seventy thousand, one hundred".