51279297056585 has 8 divisors (see below), whose sum is σ = 66268630042440. Its totient is φ = 37867788595584.

The previous prime is 51279297056567. The next prime is 51279297056587. The reversal of 51279297056585 is 58565079297215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6980528600761 + 44298768455824 = 2642069^2 + 6655732^2 .

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 51279297056585 - 2¹⁴ = 51279297040201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51279297056587) 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, 394456131140 + ... + 394456131269.

It is an arithmetic number, because the mean of its divisors is an integer number (8283578755305).

Almost surely, 2^{51279297056585} is an apocalyptic number.

It is an amenable number.

51279297056585 is a deficient number, since it is larger than the sum of its proper divisors (14989332985855).

51279297056585 is a wasteful number, since it uses less digits than its factorization.

51279297056585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788912262427.

The product of its (nonzero) digits is 476280000, while the sum is 71.

The spelling of 51279297056585 in words is "fifty-one trillion, two hundred seventy-nine billion, two hundred ninety-seven million, fifty-six thousand, five hundred eighty-five".