51139715311 has 8 divisors (see below), whose sum is σ = 53692755120. Its totient is φ = 48639315648.

The previous prime is 51139715293. The next prime is 51139715359. The reversal of 51139715311 is 11351793115.

It is a happy number.

51139715311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51139715311 - 2¹⁵ = 51139682543 is a prime.

It is a super-3 number, since 3×51139715311³ (a number of 33 digits) contains 333 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 (51139715111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13158046 + ... + 13161931.

It is an arithmetic number, because the mean of its divisors is an integer number (6711594390).

Almost surely, 2^51139715311 is an apocalyptic number.

51139715311 is a deficient number, since it is larger than the sum of its proper divisors (2553039809).

51139715311 is a wasteful number, since it uses less digits than its factorization.

51139715311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26320073.

The product of its digits is 14175, while the sum is 37.

The spelling of 51139715311 in words is "fifty-one billion, one hundred thirty-nine million, seven hundred fifteen thousand, three hundred eleven".