51105550051011 has 16 divisors (see below), whose sum is σ = 69725633535360. Its totient is φ = 33277921904640.

The previous prime is 51105550050991. The next prime is 51105550051123. The reversal of 51105550051011 is 11015005550115.

It is a happy number.

It is not a de Polignac number, because 51105550051011 - 2⁵ = 51105550050979 is a prime.

It is a super-2 number, since 2×51105550051011² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51105550051011.

It is not an unprimeable number, because it can be changed into a prime (51105550051711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59445856 + ... + 60299426.

It is an arithmetic number, because the mean of its divisors is an integer number (4357852095960).

Almost surely, 2^{51105550051011} is an apocalyptic number.

51105550051011 is a deficient number, since it is larger than the sum of its proper divisors (18620083484349).

51105550051011 is a wasteful number, since it uses less digits than its factorization.

51105550051011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317746.

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 51105550051011 in words is "fifty-one trillion, one hundred five billion, five hundred fifty million, fifty-one thousand, eleven".