51412520479 has 2 divisors, whose sum is σ = 51412520480. Its totient is φ = 51412520478.

The previous prime is 51412520407. The next prime is 51412520483. The reversal of 51412520479 is 97402521415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51412520479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51412520779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25706260239 + 25706260240.

It is an arithmetic number, because the mean of its divisors is an integer number (25706260240).

Almost surely, 2^51412520479 is an apocalyptic number.

51412520479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51412520479 is an equidigital number, since it uses as much as digits as its factorization.

51412520479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 51412520479 in words is "fifty-one billion, four hundred twelve million, five hundred twenty thousand, four hundred seventy-nine".