51299569405 has 32 divisors (see below), whose sum is σ = 71502280704. Its totient is φ = 34604006976.

The previous prime is 51299569397. The next prime is 51299569417. The reversal of 51299569405 is 50496599215.

It is not a de Polignac number, because 51299569405 - 2³ = 51299569397 is a prime.

It is a super-2 number, since 2×51299569405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1727614 + ... + 1757056.

It is an arithmetic number, because the mean of its divisors is an integer number (2234446272).

Almost surely, 2^51299569405 is an apocalyptic number.

It is an amenable number.

51299569405 is a deficient number, since it is larger than the sum of its proper divisors (20202711299).

51299569405 is a wasteful number, since it uses less digits than its factorization.

51299569405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30265.

The product of its (nonzero) digits is 4374000, while the sum is 55.

The spelling of 51299569405 in words is "fifty-one billion, two hundred ninety-nine million, five hundred sixty-nine thousand, four hundred five".