972644549085 has 48 divisors (see below), whose sum is σ = 1873884025728. Its totient is φ = 462687388800.

The previous prime is 972644549077. The next prime is 972644549089. The reversal of 972644549085 is 580945446279.

972644549085 is a `hidden beast` number, since 9 + 7 + 2 + 6 + 4 + 4 + 549 + 0 + 85 = 666.

It is not a de Polignac number, because 972644549085 - 2³ = 972644549077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972644549089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18510921 + ... + 18563390.

It is an arithmetic number, because the mean of its divisors is an integer number (39039250536).

Almost surely, 2^972644549085 is an apocalyptic number.

It is an amenable number.

972644549085 is a deficient number, since it is larger than the sum of its proper divisors (901239476643).

972644549085 is a wasteful number, since it uses less digits than its factorization.

972644549085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37074386 (or 37074383 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 972644549085 in words is "nine hundred seventy-two billion, six hundred forty-four million, five hundred forty-nine thousand, eighty-five".