51313287779277 has 4 divisors (see below), whose sum is σ = 68417717039040. Its totient is φ = 34208858519516.

The previous prime is 51313287779269. The next prime is 51313287779321. The reversal of 51313287779277 is 77297778231315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51313287779277 - 2³ = 51313287779269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313287779477) 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, 8552214629877 + ... + 8552214629882.

It is an arithmetic number, because the mean of its divisors is an integer number (17104429259760).

Almost surely, 2^{51313287779277} is an apocalyptic number.

It is an amenable number.

51313287779277 is a deficient number, since it is larger than the sum of its proper divisors (17104429259763).

51313287779277 is a wasteful number, since it uses less digits than its factorization.

51313287779277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104429259762.

The product of its digits is 217818720, while the sum is 69.

The spelling of 51313287779277 in words is "fifty-one trillion, three hundred thirteen billion, two hundred eighty-seven million, seven hundred seventy-nine thousand, two hundred seventy-seven".