32557478679 has 24 divisors (see below), whose sum is σ = 51617459712. Its totient is φ = 19610741520.

The previous prime is 32557478623. The next prime is 32557478687. The reversal of 32557478679 is 97687475523.

32557478679 is a `hidden beast` number, since 3 + 2 + 557 + 4 + 7 + 8 + 6 + 79 = 666.

It is not a de Polignac number, because 32557478679 - 2¹³ = 32557470487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32557478609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 992647 + ... + 1024920.

It is an arithmetic number, because the mean of its divisors is an integer number (2150727488).

Almost surely, 2^32557478679 is an apocalyptic number.

32557478679 is a deficient number, since it is larger than the sum of its proper divisors (19059981033).

32557478679 is a wasteful number, since it uses less digits than its factorization.

32557478679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017747 (or 2017744 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The spelling of 32557478679 in words is "thirty-two billion, five hundred fifty-seven million, four hundred seventy-eight thousand, six hundred seventy-nine".