972500055771 has 16 divisors (see below), whose sum is σ = 1343258062848. Its totient is φ = 625186564800.

The previous prime is 972500055763. The next prime is 972500055809. The reversal of 972500055771 is 177550005279.

It is not a de Polignac number, because 972500055771 - 2³ = 972500055763 is a prime.

It is a super-2 number, since 2×972500055771² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 972500055771.

It is not an unprimeable number, because it can be changed into a prime (972500055701) 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, 18580611 + ... + 18632876.

It is an arithmetic number, because the mean of its divisors is an integer number (83953628928).

Almost surely, 2^972500055771 is an apocalyptic number.

972500055771 is a deficient number, since it is larger than the sum of its proper divisors (370758007077).

972500055771 is a wasteful number, since it uses less digits than its factorization.

972500055771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37213802.

The product of its (nonzero) digits is 771750, while the sum is 48.

The spelling of 972500055771 in words is "nine hundred seventy-two billion, five hundred million, fifty-five thousand, seven hundred seventy-one".