51020616111 has 32 divisors (see below), whose sum is σ = 73802147328. Its totient is φ = 31267484160.

The previous prime is 51020616079. The next prime is 51020616133. The reversal of 51020616111 is 11161602015.

51020616111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51020616111 - 2⁵ = 51020616079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020616211) 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, 54955 + ... + 324131.

It is an arithmetic number, because the mean of its divisors is an integer number (2306317104).

Almost surely, 2^51020616111 is an apocalyptic number.

51020616111 is a deficient number, since it is larger than the sum of its proper divisors (22781531217).

51020616111 is a wasteful number, since it uses less digits than its factorization.

51020616111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269311.

The product of its (nonzero) digits is 360, while the sum is 24.

The spelling of 51020616111 in words is "fifty-one billion, twenty million, six hundred sixteen thousand, one hundred eleven".