51147602478 has 36 divisors (see below), whose sum is σ = 128912837040. Its totient is φ = 14613600456.

The previous prime is 51147602411. The next prime is 51147602509. The reversal of 51147602478 is 87420674115.

51147602478 is a `hidden beast` number, since 5 + 114 + 7 + 60 + 2 + 478 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28994358 + ... + 28996121.

It is an arithmetic number, because the mean of its divisors is an integer number (3580912140).

Almost surely, 2^51147602478 is an apocalyptic number.

51147602478 is an abundant number, since it is smaller than the sum of its proper divisors (77765234562).

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

51147602478 is a wasteful number, since it uses less digits than its factorization.

51147602478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57990501 (or 57990491 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 51147602478 in words is "fifty-one billion, one hundred forty-seven million, six hundred two thousand, four hundred seventy-eight".