51111050010005 has 16 divisors (see below), whose sum is σ = 63603330159600. Its totient is φ = 39382354583040.

The previous prime is 51111050009989. The next prime is 51111050010011. The reversal of 51111050010005 is 50001005011115.

It can be written as a sum of positive squares in 8 ways, for example, as 3843238734724 + 47267811275281 = 1960418^2 + 6875159^2 .

It is not a de Polignac number, because 51111050010005 - 2⁴ = 51111050009989 is a prime.

It is a super-2 number, since 2×51111050010005² (a number of 28 digits) contains 22 as substring.

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, 430857566 + ... + 430976175.

It is an arithmetic number, because the mean of its divisors is an integer number (3975208134975).

Almost surely, 2^{51111050010005} is an apocalyptic number.

It is an amenable number.

51111050010005 is a deficient number, since it is larger than the sum of its proper divisors (12492280149595).

51111050010005 is a wasteful number, since it uses less digits than its factorization.

51111050010005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861834184.

The product of its (nonzero) digits is 125, while the sum is 20.

The spelling of 51111050010005 in words is "fifty-one trillion, one hundred eleven billion, fifty million, ten thousand, five".