51402365479 has 2 divisors, whose sum is σ = 51402365480. Its totient is φ = 51402365478.

The previous prime is 51402365459. The next prime is 51402365519. The reversal of 51402365479 is 97456320415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51402365479 - 2¹⁹ = 51401841191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51402365459) 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, 25701182739 + 25701182740.

It is an arithmetic number, because the mean of its divisors is an integer number (25701182740).

Almost surely, 2^51402365479 is an apocalyptic number.

51402365479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51402365479 is an equidigital number, since it uses as much as digits as its factorization.

51402365479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 51402365479 in words is "fifty-one billion, four hundred two million, three hundred sixty-five thousand, four hundred seventy-nine".