51371773220855 has 16 divisors (see below), whose sum is σ = 63081886147104. Its totient is φ = 40140310855680.

The previous prime is 51371773220791. The next prime is 51371773220857. The reversal of 51371773220855 is 55802237717315.

It is not a de Polignac number, because 51371773220855 - 2⁶ = 51371773220791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51371773220855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51371773220857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2384327 + ... + 10412903.

It is an arithmetic number, because the mean of its divisors is an integer number (3942617884194).

Almost surely, 2^{51371773220855} is an apocalyptic number.

51371773220855 is a deficient number, since it is larger than the sum of its proper divisors (11710112926249).

51371773220855 is a wasteful number, since it uses less digits than its factorization.

51371773220855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058386.

The product of its (nonzero) digits is 12348000, while the sum is 56.

The spelling of 51371773220855 in words is "fifty-one trillion, three hundred seventy-one billion, seven hundred seventy-three million, two hundred twenty thousand, eight hundred fifty-five".