51505100005 has 16 divisors (see below), whose sum is σ = 65597263344. Its totient is φ = 38688168960.

The previous prime is 51505099963. The next prime is 51505100027. The reversal of 51505100005 is 50000150515.

It can be written as a sum of positive squares in 8 ways, for example, as 11553885121 + 39951214884 = 107489^2 + 199878^2 .

It is not a de Polignac number, because 51505100005 - 2¹¹ = 51505097957 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 15 ways as a sum of consecutive naturals, for example, 683862 + ... + 755431.

It is an arithmetic number, because the mean of its divisors is an integer number (4099828959).

Almost surely, 2^51505100005 is an apocalyptic number.

It is an amenable number.

51505100005 is a deficient number, since it is larger than the sum of its proper divisors (14092163339).

51505100005 is a wasteful number, since it uses less digits than its factorization.

51505100005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439736.

The product of its (nonzero) digits is 625, while the sum is 22.

The spelling of 51505100005 in words is "fifty-one billion, five hundred five million, one hundred thousand, five".