51005106060005 has 4 divisors (see below), whose sum is σ = 61206127272012. Its totient is φ = 40804084848000.

The previous prime is 51005106060001. The next prime is 51005106060019. The reversal of 51005106060005 is 50006060150015.

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 40474814968324 + 10530291091681 = 6361982^2 + 3245041^2 .

It is not a de Polignac number, because 51005106060005 - 2² = 51005106060001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51005106060005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005106060001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100510605996 + ... + 5100510606005.

It is an arithmetic number, because the mean of its divisors is an integer number (15301531818003).

Almost surely, 2^{51005106060005} is an apocalyptic number.

It is an amenable number.

51005106060005 is a deficient number, since it is larger than the sum of its proper divisors (10201021212007).

51005106060005 is a wasteful number, since it uses less digits than its factorization.

51005106060005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201021212006.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 51005106060005 in words is "fifty-one trillion, five billion, one hundred six million, sixty thousand, five".