51321100319 has 2 divisors, whose sum is σ = 51321100320. Its totient is φ = 51321100318.

The previous prime is 51321100189. The next prime is 51321100331. The reversal of 51321100319 is 91300112315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51321100319 - 2²⁰ = 51320051743 is a prime.

It is a super-2 number, since 2×51321100319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51321100349) by changing a digit.

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 as a sum of consecutive naturals, namely, 25660550159 + 25660550160.

It is an arithmetic number, because the mean of its divisors is an integer number (25660550160).

Almost surely, 2^51321100319 is an apocalyptic number.

51321100319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51321100319 is an equidigital number, since it uses as much as digits as its factorization.

51321100319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The spelling of 51321100319 in words is "fifty-one billion, three hundred twenty-one million, one hundred thousand, three hundred nineteen".