51431011279 has 2 divisors, whose sum is σ = 51431011280. Its totient is φ = 51431011278.

The previous prime is 51431011253. The next prime is 51431011283. The reversal of 51431011279 is 97211013415.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51431011279 - 2⁹ = 51431010767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51431011579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715505639 + 25715505640.

It is an arithmetic number, because the mean of its divisors is an integer number (25715505640).

Almost surely, 2^51431011279 is an apocalyptic number.

51431011279 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431011279 is an equidigital number, since it uses as much as digits as its factorization.

51431011279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 51431011279 in words is "fifty-one billion, four hundred thirty-one million, eleven thousand, two hundred seventy-nine".