51385326239 has 8 divisors (see below), whose sum is σ = 57123142272. Its totient is φ = 45902524320.

The previous prime is 51385326197. The next prime is 51385326277. The reversal of 51385326239 is 93262358315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51385326239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51385326193 and 51385326202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51385326299) 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, 63753104 + ... + 63753909.

It is an arithmetic number, because the mean of its divisors is an integer number (7140392784).

Almost surely, 2^51385326239 is an apocalyptic number.

51385326239 is a deficient number, since it is larger than the sum of its proper divisors (5737816033).

51385326239 is a wasteful number, since it uses less digits than its factorization.

51385326239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127507057.

The product of its digits is 1166400, while the sum is 47.

The spelling of 51385326239 in words is "fifty-one billion, three hundred eighty-five million, three hundred twenty-six thousand, two hundred thirty-nine".