6558975157 has 4 divisors (see below), whose sum is σ = 7495971616. Its totient is φ = 5621978700.

The previous prime is 6558975149. The next prime is 6558975169. The reversal of 6558975157 is 7515798556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6558975157 - 2³ = 6558975149 is a prime.

It is a super-2 number, since 2×6558975157² = 86040310220286349298, which contains 22 as substring.

It is the 80988-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6558975107) by changing a digit.

It is a nontrivial repunit in base 80987.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468498219 + ... + 468498232.

It is an arithmetic number, because the mean of its divisors is an integer number (1873992904).

Almost surely, 2^6558975157 is an apocalyptic number.

It is an amenable number.

6558975157 is a deficient number, since it is larger than the sum of its proper divisors (936996459).

6558975157 is an equidigital number, since it uses as much as digits as its factorization.

6558975157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936996458.

The product of its digits is 13230000, while the sum is 58.

The square root of 6558975157 is about 80987.5000046303. The cubic root of 6558975157 is about 1871.8828355100.

The spelling of 6558975157 in words is "six billion, five hundred fifty-eight million, nine hundred seventy-five thousand, one hundred fifty-seven".