478891187038 has 16 divisors (see below), whose sum is σ = 783693118080. Its totient is φ = 217663091800.

The previous prime is 478891187029. The next prime is 478891187041. The reversal of 478891187038 is 830781198874.

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, 399898 + ... + 1057213.

It is an arithmetic number, because the mean of its divisors is an integer number (48980819880).

Almost surely, 2^478891187038 is an apocalyptic number.

478891187038 is a deficient number, since it is larger than the sum of its proper divisors (304801931042).

478891187038 is a wasteful number, since it uses less digits than its factorization.

478891187038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472063.

The product of its (nonzero) digits is 21676032, while the sum is 64.

The spelling of 478891187038 in words is "four hundred seventy-eight billion, eight hundred ninety-one million, one hundred eighty-seven thousand, thirty-eight".