51127121627 has 4 divisors (see below), whose sum is σ = 51129850080. Its totient is φ = 51124393176.

The previous prime is 51127121623. The next prime is 51127121701. The reversal of 51127121627 is 72612172115.

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 51127121627 - 2² = 51127121623 is a prime.

It is a super-2 number, since 2×51127121627² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51127121623) 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, 1335923 + ... + 1373660.

It is an arithmetic number, because the mean of its divisors is an integer number (12782462520).

Almost surely, 2^51127121627 is an apocalyptic number.

51127121627 is a deficient number, since it is larger than the sum of its proper divisors (2728453).

51127121627 is a wasteful number, since it uses less digits than its factorization.

51127121627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728452.

The product of its digits is 11760, while the sum is 35.

The spelling of 51127121627 in words is "fifty-one billion, one hundred twenty-seven million, one hundred twenty-one thousand, six hundred twenty-seven".