6557945363972 has 48 divisors (see below), whose sum is σ = 11621922923520. Its totient is φ = 3237677829792.

The previous prime is 6557945363971. The next prime is 6557945363999. The reversal of 6557945363972 is 2793635497556.

It is a junction number, because it is equal to n+sod(n) for n = 6557945363896 and 6557945363905.

It is not an unprimeable number, because it can be changed into a prime (6557945363971) 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, 227226479 + ... + 227255337.

It is an arithmetic number, because the mean of its divisors is an integer number (242123394240).

Almost surely, 2^{6557945363972} is an apocalyptic number.

It is an amenable number.

6557945363972 is a deficient number, since it is larger than the sum of its proper divisors (5063977559548).

6557945363972 is a wasteful number, since it uses less digits than its factorization.

6557945363972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31280 (or 31278 counting only the distinct ones).

The product of its digits is 1285956000, while the sum is 71.

The spelling of 6557945363972 in words is "six trillion, five hundred fifty-seven billion, nine hundred forty-five million, three hundred sixty-three thousand, nine hundred seventy-two".