51085869279 has 8 divisors (see below), whose sum is σ = 68115960240. Its totient is φ = 34056512256.

The previous prime is 51085869229. The next prime is 51085869323. The reversal of 51085869279 is 97296858015.

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

It is not a de Polignac number, because 51085869279 - 2²⁵ = 51052314847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51085869229) 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, 7257 + ... + 319725.

It is an arithmetic number, because the mean of its divisors is an integer number (8514495030).

Almost surely, 2^51085869279 is an apocalyptic number.

51085869279 is a deficient number, since it is larger than the sum of its proper divisors (17030090961).

51085869279 is a wasteful number, since it uses less digits than its factorization.

51085869279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366969.

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 51085869279 in words is "fifty-one billion, eighty-five million, eight hundred sixty-nine thousand, two hundred seventy-nine".