478200172887 has 12 divisors (see below), whose sum is σ = 690922407240. Its totient is φ = 318712965648.

The previous prime is 478200172859. The next prime is 478200172897. The reversal of 478200172887 is 788271002874.

478200172887 is a `hidden beast` number, since 478 + 20 + 0 + 1 + 72 + 8 + 87 = 666.

It is not a de Polignac number, because 478200172887 - 2³⁵ = 443840434519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478200172897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7227708 + ... + 7293569.

It is an arithmetic number, because the mean of its divisors is an integer number (57576867270).

Almost surely, 2^478200172887 is an apocalyptic number.

478200172887 is a deficient number, since it is larger than the sum of its proper divisors (212722234353).

478200172887 is a wasteful number, since it uses less digits than its factorization.

478200172887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14524942 (or 14524939 counting only the distinct ones).

The product of its (nonzero) digits is 2809856, while the sum is 54.

The spelling of 478200172887 in words is "four hundred seventy-eight billion, two hundred million, one hundred seventy-two thousand, eight hundred eighty-seven".