51616610111 has 32 divisors (see below), whose sum is σ = 60365979648. Its totient is φ = 43614743040.

The previous prime is 51616610107. The next prime is 51616610113. The reversal of 51616610111 is 11101661615.

It is a happy number.

It is not a de Polignac number, because 51616610111 - 2² = 51616610107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616610113) 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, 7373465 + ... + 7380461.

It is an arithmetic number, because the mean of its divisors is an integer number (1886436864).

Almost surely, 2^51616610111 is an apocalyptic number.

51616610111 is a deficient number, since it is larger than the sum of its proper divisors (8749369537).

51616610111 is a wasteful number, since it uses less digits than its factorization.

51616610111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 1080, while the sum is 29.

The spelling of 51616610111 in words is "fifty-one billion, six hundred sixteen million, six hundred ten thousand, one hundred eleven".