478017296887 has 16 divisors (see below), whose sum is σ = 517742736448. Its totient is φ = 438716528640.

The previous prime is 478017296873. The next prime is 478017297073. The reversal of 478017296887 is 788692710874.

It is not a de Polignac number, because 478017296887 - 2²⁷ = 477883079159 is a prime.

It is a super-2 number, since 2×478017296887² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478017290887) 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, 4541953 + ... + 4646005.

It is an arithmetic number, because the mean of its divisors is an integer number (32358921028).

Almost surely, 2^478017296887 is an apocalyptic number.

478017296887 is a deficient number, since it is larger than the sum of its proper divisors (39725439561).

478017296887 is a wasteful number, since it uses less digits than its factorization.

478017296887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106090.

The product of its (nonzero) digits is 75866112, while the sum is 67.

The spelling of 478017296887 in words is "four hundred seventy-eight billion, seventeen million, two hundred ninety-six thousand, eight hundred eighty-seven".