51263574474 has 64 divisors (see below), whose sum is σ = 118836080640. Its totient is φ = 14439522240.

The previous prime is 51263574451. The next prime is 51263574539. The reversal of 51263574474 is 47447536215.

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 31 ways as a sum of consecutive naturals, for example, 2254884 + ... + 2277504.

It is an arithmetic number, because the mean of its divisors is an integer number (1856813760).

Almost surely, 2^51263574474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51263574474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59418040320).

51263574474 is an abundant number, since it is smaller than the sum of its proper divisors (67572506166).

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

51263574474 is a wasteful number, since it uses less digits than its factorization.

51263574474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23395.

The product of its digits is 2822400, while the sum is 48.

The spelling of 51263574474 in words is "fifty-one billion, two hundred sixty-three million, five hundred seventy-four thousand, four hundred seventy-four".