32557478678 has 16 divisors (see below), whose sum is σ = 49417464096. Its totient is φ = 16085677440.

The previous prime is 32557478623. The next prime is 32557478687. The reversal of 32557478678 is 87687475523.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 32557478678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76451 + ... + 266382.

It is an arithmetic number, because the mean of its divisors is an integer number (3088591506).

Almost surely, 2^32557478678 is an apocalyptic number.

32557478678 is a deficient number, since it is larger than the sum of its proper divisors (16859985418).

32557478678 is a wasteful number, since it uses less digits than its factorization.

32557478678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343399.

The product of its digits is 79027200, while the sum is 62.

The spelling of 32557478678 in words is "thirty-two billion, five hundred fifty-seven million, four hundred seventy-eight thousand, six hundred seventy-eight".