972911638205 has 32 divisors (see below), whose sum is σ = 1401326438400. Its totient is φ = 640606344192.

The previous prime is 972911638177. The next prime is 972911638211. The reversal of 972911638205 is 502836119279.

It is a cyclic number.

It is not a de Polignac number, because 972911638205 - 2¹² = 972911634109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23149085 + ... + 23191074.

It is an arithmetic number, because the mean of its divisors is an integer number (43791451200).

Almost surely, 2^972911638205 is an apocalyptic number.

972911638205 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

972911638205 is a deficient number, since it is larger than the sum of its proper divisors (428414800195).

972911638205 is a wasteful number, since it uses less digits than its factorization.

972911638205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46340213.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 972911638205 in words is "nine hundred seventy-two billion, nine hundred eleven million, six hundred thirty-eight thousand, two hundred five".