51079454431 has 2 divisors, whose sum is σ = 51079454432. Its totient is φ = 51079454430.

The previous prime is 51079454383. The next prime is 51079454443. The reversal of 51079454431 is 13445497015.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51079454431 - 2⁷ = 51079454303 is a prime.

It is a super-2 number, since 2×51079454431² (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 (51079454731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25539727215 + 25539727216.

It is an arithmetic number, because the mean of its divisors is an integer number (25539727216).

Almost surely, 2^51079454431 is an apocalyptic number.

51079454431 is a deficient number, since it is larger than the sum of its proper divisors (1).

51079454431 is an equidigital number, since it uses as much as digits as its factorization.

51079454431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 51079454431 in words is "fifty-one billion, seventy-nine million, four hundred fifty-four thousand, four hundred thirty-one".