51000106056005 has 4 divisors (see below), whose sum is σ = 61200127267212. Its totient is φ = 40800084844800.

The previous prime is 51000106055999. The next prime is 51000106056049. The reversal of 51000106056005 is 50065060100015.

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 27821331315649 + 23178774740356 = 5274593^2 + 4814434^2 .

It is not a de Polignac number, because 51000106056005 - 2²² = 51000101861701 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, 5100010605596 + ... + 5100010605605.

It is an arithmetic number, because the mean of its divisors is an integer number (15300031816803).

Almost surely, 2^{51000106056005} is an apocalyptic number.

It is an amenable number.

51000106056005 is a deficient number, since it is larger than the sum of its proper divisors (10200021211207).

51000106056005 is a wasteful number, since it uses less digits than its factorization.

51000106056005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200021211206.

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

The spelling of 51000106056005 in words is "fifty-one trillion, one hundred six million, fifty-six thousand, five".