7972741644 has 24 divisors (see below), whose sum is σ = 21260644608. Its totient is φ = 2277926160.

The previous prime is 7972741631. The next prime is 7972741709. The reversal of 7972741644 is 4461472797.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47456712 + ... + 47456879.

It is an arithmetic number, because the mean of its divisors is an integer number (885860192).

Almost surely, 2^7972741644 is an apocalyptic number.

It is an amenable number.

7972741644 is an abundant number, since it is smaller than the sum of its proper divisors (13287902964).

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

7972741644 is a wasteful number, since it uses less digits than its factorization.

7972741644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94913605 (or 94913603 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 51.

The square root of 7972741644 is about 89290.2102360612. The cubic root of 7972741644 is about 1997.7258855151.

The spelling of 7972741644 in words is "seven billion, nine hundred seventy-two million, seven hundred forty-one thousand, six hundred forty-four".