51013762405 has 4 divisors (see below), whose sum is σ = 61216514892. Its totient is φ = 40811009920.

The previous prime is 51013762391. The next prime is 51013762417. The reversal of 51013762405 is 50426731015.

51013762405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20759334561 + 30254427844 = 144081^2 + 173938^2 .

It is not a de Polignac number, because 51013762405 - 2⁷ = 51013762277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101376236 + ... + 5101376245.

It is an arithmetic number, because the mean of its divisors is an integer number (15304128723).

Almost surely, 2^51013762405 is an apocalyptic number.

It is an amenable number.

51013762405 is a deficient number, since it is larger than the sum of its proper divisors (10202752487).

51013762405 is a wasteful number, since it uses less digits than its factorization.

51013762405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202752486.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 51013762405 in words is "fifty-one billion, thirteen million, seven hundred sixty-two thousand, four hundred five".