51236252679 has 4 divisors (see below), whose sum is σ = 68315003576. Its totient is φ = 34157501784.

The previous prime is 51236252677. The next prime is 51236252693. The reversal of 51236252679 is 97625263215.

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

It is not a de Polignac number, because 51236252679 - 2¹ = 51236252677 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 (51236252671) 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, 8539375444 + ... + 8539375449.

It is an arithmetic number, because the mean of its divisors is an integer number (17078750894).

Almost surely, 2^51236252679 is an apocalyptic number.

51236252679 is a deficient number, since it is larger than the sum of its proper divisors (17078750897).

51236252679 is a wasteful number, since it uses less digits than its factorization.

51236252679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078750896.

The product of its digits is 1360800, while the sum is 48.

The spelling of 51236252679 in words is "fifty-one billion, two hundred thirty-six million, two hundred fifty-two thousand, six hundred seventy-nine".