478688251139 has 16 divisors (see below), whose sum is σ = 575980204800. Its totient is φ = 388631875104.

The previous prime is 478688251133. The next prime is 478688251169. The reversal of 478688251139 is 931152886874.

It is not a de Polignac number, because 478688251139 - 2³² = 474393283843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478688251133) 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, 317129 + ... + 1028565.

It is an arithmetic number, because the mean of its divisors is an integer number (35998762800).

Almost surely, 2^478688251139 is an apocalyptic number.

478688251139 is a deficient number, since it is larger than the sum of its proper divisors (97291953661).

478688251139 is a wasteful number, since it uses less digits than its factorization.

478688251139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716522.

The product of its digits is 23224320, while the sum is 62.

The spelling of 478688251139 in words is "four hundred seventy-eight billion, six hundred eighty-eight million, two hundred fifty-one thousand, one hundred thirty-nine".