6657407605528 has 16 divisors (see below), whose sum is σ = 12484104314760. Its totient is φ = 3328313121600.

The previous prime is 6657407605517. The next prime is 6657407605559. The reversal of 6657407605528 is 8255067047566.

It is a happy number.

It is a super-2 number, since 2×6657407605528² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48762718 + ... + 48899053.

Almost surely, 2^{6657407605528} is an apocalyptic number.

It is an amenable number.

6657407605528 is a deficient number, since it is larger than the sum of its proper divisors (5826696709232).

6657407605528 is a wasteful number, since it uses less digits than its factorization.

6657407605528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97670298 (or 97670294 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 61.

The spelling of 6657407605528 in words is "six trillion, six hundred fifty-seven billion, four hundred seven million, six hundred five thousand, five hundred twenty-eight".