518454863478 has 12 divisors (see below), whose sum is σ = 1123318870908. Its totient is φ = 172818287820.

The previous prime is 518454863449. The next prime is 518454863551. The reversal of 518454863478 is 874368454815.

518454863478 is a `hidden beast` number, since 5 + 1 + 8 + 454 + 86 + 34 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14401523968 + ... + 14401524003.

It is an arithmetic number, because the mean of its divisors is an integer number (93609905909).

Almost surely, 2^518454863478 is an apocalyptic number.

518454863478 is an abundant number, since it is smaller than the sum of its proper divisors (604864007430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518454863478 is a wasteful number, since it uses less digits than its factorization.

518454863478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28803047979 (or 28803047976 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 63.

The spelling of 518454863478 in words is "five hundred eighteen billion, four hundred fifty-four million, eight hundred sixty-three thousand, four hundred seventy-eight".