51012015111 has 32 divisors (see below), whose sum is σ = 76506232320. Its totient is φ = 33589631232.

The previous prime is 51012015097. The next prime is 51012015127. The reversal of 51012015111 is 11151021015.

51012015111 is a `hidden beast` number, since 510 + 1 + 2 + 0 + 151 + 1 + 1 = 666.

It is not a de Polignac number, because 51012015111 - 2⁷ = 51012014983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012015211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297996 + ... + 1336718.

It is an arithmetic number, because the mean of its divisors is an integer number (2390819760).

Almost surely, 2^51012015111 is an apocalyptic number.

51012015111 is a deficient number, since it is larger than the sum of its proper divisors (25494217209).

51012015111 is a wasteful number, since it uses less digits than its factorization.

51012015111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39332 (or 39326 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 18.

Adding to 51012015111 its reverse (11151021015), we get a palindrome (62163036126).

The spelling of 51012015111 in words is "fifty-one billion, twelve million, fifteen thousand, one hundred eleven".