6637113295972 has 6 divisors (see below), whose sum is σ = 11614948267958. Its totient is φ = 3318556647984.

The previous prime is 6637113295937. The next prime is 6637113295979. The reversal of 6637113295972 is 2795923117366.

It can be written as a sum of positive squares in only one way, i.e., 5511103685476 + 1126009610496 = 2347574^2 + 1061136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6637113295972.

It is not an unprimeable number, because it can be changed into a prime (6637113295979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829639161993 + ... + 829639162000.

Almost surely, 2^{6637113295972} is an apocalyptic number.

It is an amenable number.

6637113295972 is a deficient number, since it is larger than the sum of its proper divisors (4977834971986).

6637113295972 is a wasteful number, since it uses less digits than its factorization.

6637113295972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659278323997 (or 1659278323995 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 61.

The spelling of 6637113295972 in words is "six trillion, six hundred thirty-seven billion, one hundred thirteen million, two hundred ninety-five thousand, nine hundred seventy-two".