478725592891 has 64 divisors (see below), whose sum is σ = 621353779200. Its totient is φ = 366120034560.

The previous prime is 478725592867. The next prime is 478725592937. The reversal of 478725592891 is 198295527874.

It is not a de Polignac number, because 478725592891 - 2⁵ = 478725592859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478725592091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 164905746 + ... + 164908648.

It is an arithmetic number, because the mean of its divisors is an integer number (9708652800).

Almost surely, 2^478725592891 is an apocalyptic number.

478725592891 is a deficient number, since it is larger than the sum of its proper divisors (142628186309).

478725592891 is a wasteful number, since it uses less digits than its factorization.

478725592891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161 (or 4147 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 67.

The spelling of 478725592891 in words is "four hundred seventy-eight billion, seven hundred twenty-five million, five hundred ninety-two thousand, eight hundred ninety-one".