51105055510231 has 4 divisors (see below), whose sum is σ = 51180543037512. Its totient is φ = 51029567982952.

The previous prime is 51105055510139. The next prime is 51105055510349. The reversal of 51105055510231 is 13201555050115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51105055510231 - 2²¹ = 51105053413079 is a prime.

It is a super-2 number, since 2×51105055510231² (a number of 28 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 (51105055517231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37743762625 + ... + 37743763978.

It is an arithmetic number, because the mean of its divisors is an integer number (12795135759378).

Almost surely, 2^{51105055510231} is an apocalyptic number.

51105055510231 is a deficient number, since it is larger than the sum of its proper divisors (75487527281).

51105055510231 is an equidigital number, since it uses as much as digits as its factorization.

51105055510231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75487527280.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 51105055510231 in words is "fifty-one trillion, one hundred five billion, fifty-five million, five hundred ten thousand, two hundred thirty-one".