51100056111 has 8 divisors (see below), whose sum is σ = 73374439600. Its totient is φ = 31446188352.

The previous prime is 51100056109. The next prime is 51100056127. The reversal of 51100056111 is 11165000115.

It is a happy number.

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

It is not a de Polignac number, because 51100056111 - 2¹ = 51100056109 is a prime.

It is a super-2 number, since 2×51100056111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100056211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655128886 + ... + 655128963.

It is an arithmetic number, because the mean of its divisors is an integer number (9171804950).

Almost surely, 2^51100056111 is an apocalyptic number.

51100056111 is a deficient number, since it is larger than the sum of its proper divisors (22274383489).

51100056111 is a wasteful number, since it uses less digits than its factorization.

51100056111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310257865.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 51100056111 its reverse (11165000115), we get a palindrome (62265056226).

The spelling of 51100056111 in words is "fifty-one billion, one hundred million, fifty-six thousand, one hundred eleven".