51075507474 has 32 divisors (see below), whose sum is σ = 118435962240. Its totient is φ = 16284944016.

The previous prime is 51075507467. The next prime is 51075507479. The reversal of 51075507474 is 47470557015.

51075507474 is a `hidden beast` number, since 5 + 1 + 0 + 75 + 507 + 4 + 74 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51075507479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20560557 + ... + 20563040.

It is an arithmetic number, because the mean of its divisors is an integer number (3701123820).

Almost surely, 2^51075507474 is an apocalyptic number.

51075507474 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51075507474 is an abundant number, since it is smaller than the sum of its proper divisors (67360454766).

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

51075507474 is a wasteful number, since it uses less digits than its factorization.

51075507474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41123631 (or 41123625 counting only the distinct ones).

The product of its (nonzero) digits is 686000, while the sum is 45.

The spelling of 51075507474 in words is "fifty-one billion, seventy-five million, five hundred seven thousand, four hundred seventy-four".