51886272817 has 4 divisors (see below), whose sum is σ = 51887052400. Its totient is φ = 51885493236.

The previous prime is 51886272791. The next prime is 51886272829. The reversal of 51886272817 is 71827268815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51886272817 - 2⁷ = 51886272689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51886272877) 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, 279567 + ... + 426532.

It is an arithmetic number, because the mean of its divisors is an integer number (12971763100).

Almost surely, 2^51886272817 is an apocalyptic number.

It is an amenable number.

51886272817 is a deficient number, since it is larger than the sum of its proper divisors (779583).

51886272817 is an equidigital number, since it uses as much as digits as its factorization.

51886272817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779582.

The product of its digits is 3010560, while the sum is 55.

The spelling of 51886272817 in words is "fifty-one billion, eight hundred eighty-six million, two hundred seventy-two thousand, eight hundred seventeen".