51031664119 has 2 divisors, whose sum is σ = 51031664120. Its totient is φ = 51031664118.

The previous prime is 51031664113. The next prime is 51031664137. The reversal of 51031664119 is 91146613015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51031664119 - 2⁵ = 51031664087 is a prime.

It is a super-2 number, since 2×51031664119² (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 (51031664113) 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, 25515832059 + 25515832060.

It is an arithmetic number, because the mean of its divisors is an integer number (25515832060).

Almost surely, 2^51031664119 is an apocalyptic number.

51031664119 is a deficient number, since it is larger than the sum of its proper divisors (1).

51031664119 is an equidigital number, since it uses as much as digits as its factorization.

51031664119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 51031664119 in words is "fifty-one billion, thirty-one million, six hundred sixty-four thousand, one hundred nineteen".