51015423005 has 4 divisors (see below), whose sum is σ = 61218507612. Its totient is φ = 40812338400.

The previous prime is 51015422971. The next prime is 51015423023. The reversal of 51015423005 is 50032451015.

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 24354411481 + 26661011524 = 156059^2 + 163282^2 .

It is not a de Polignac number, because 51015423005 - 2¹⁴ = 51015406621 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, 5101542296 + ... + 5101542305.

It is an arithmetic number, because the mean of its divisors is an integer number (15304626903).

Almost surely, 2^51015423005 is an apocalyptic number.

It is an amenable number.

51015423005 is a deficient number, since it is larger than the sum of its proper divisors (10203084607).

51015423005 is a wasteful number, since it uses less digits than its factorization.

51015423005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203084606.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 51015423005 in words is "fifty-one billion, fifteen million, four hundred twenty-three thousand, five".