51005620565007 has 16 divisors (see below), whose sum is σ = 72200985706080. Its totient is φ = 31917726277632.

The previous prime is 51005620564999. The next prime is 51005620565023. The reversal of 51005620565007 is 70056502650015.

It is a happy number.

It is not a de Polignac number, because 51005620565007 - 2³ = 51005620564999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51005620565007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005620565077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340611282 + ... + 1340649327.

It is an arithmetic number, because the mean of its divisors is an integer number (4512561606630).

Almost surely, 2^{51005620565007} is an apocalyptic number.

51005620565007 is a deficient number, since it is larger than the sum of its proper divisors (21195365141073).

51005620565007 is a wasteful number, since it uses less digits than its factorization.

51005620565007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681261002.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 51005620565007 in words is "fifty-one trillion, five billion, six hundred twenty million, five hundred sixty-five thousand, seven".