51100556111 has 8 divisors (see below), whose sum is σ = 56171605248. Its totient is φ = 46100431000.

The previous prime is 51100556081. The next prime is 51100556113. The reversal of 51100556111 is 11165500115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51100556111 - 2⁶ = 51100556047 is a prime.

It is a super-2 number, since 2×51100556111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100556113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17729495 + ... + 17732376.

It is an arithmetic number, because the mean of its divisors is an integer number (7021450656).

Almost surely, 2^51100556111 is an apocalyptic number.

51100556111 is a deficient number, since it is larger than the sum of its proper divisors (5071049137).

51100556111 is a wasteful number, since it uses less digits than its factorization.

51100556111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462013.

The product of its (nonzero) digits is 750, while the sum is 26.

The spelling of 51100556111 in words is "fifty-one billion, one hundred million, five hundred fifty-six thousand, one hundred eleven".