51407335512877 has 4 divisors (see below), whose sum is σ = 51407350181596. Its totient is φ = 51407320844160.

The previous prime is 51407335512859. The next prime is 51407335512889. The reversal of 51407335512877 is 77821553370415.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 36346501785636 + 15060833727241 = 6028806^2 + 3880829^2 .

It is a cyclic number.

It is not a de Polignac number, because 51407335512877 - 2⁷ = 51407335512749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51407335512977) 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, 1350427 + ... + 10229287.

It is an arithmetic number, because the mean of its divisors is an integer number (12851837545399).

Almost surely, 2^{51407335512877} is an apocalyptic number.

It is an amenable number.

51407335512877 is a deficient number, since it is larger than the sum of its proper divisors (14668719).

51407335512877 is an equidigital number, since it uses as much as digits as its factorization.

51407335512877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14668718.

The product of its (nonzero) digits is 24696000, while the sum is 58.

The spelling of 51407335512877 in words is "fifty-one trillion, four hundred seven billion, three hundred thirty-five million, five hundred twelve thousand, eight hundred seventy-seven".