51012111121015 has 48 divisors (see below), whose sum is σ = 68866556175648. Its totient is φ = 36228310272000.

The previous prime is 51012111120991. The next prime is 51012111121019.

51012111121015 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51012111121015 - 2²⁷ = 51011976903287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012111121019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110098435 + ... + 110560795.

It is an arithmetic number, because the mean of its divisors is an integer number (1434719920326).

Almost surely, 2^{51012111121015} is an apocalyptic number.

51012111121015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51012111121015 is a deficient number, since it is larger than the sum of its proper divisors (17854445054633).

51012111121015 is a wasteful number, since it uses less digits than its factorization.

51012111121015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466672 (or 466661 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 22.

It can be divided in two parts, 5101211 and 1121015, that added together give a palindrome (6222226).

The spelling of 51012111121015 in words is "fifty-one trillion, twelve billion, one hundred eleven million, one hundred twenty-one thousand, fifteen".