51042465407 has 2 divisors, whose sum is σ = 51042465408. Its totient is φ = 51042465406.

The previous prime is 51042465401. The next prime is 51042465443. The reversal of 51042465407 is 70456424015.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51042465407 - 2²⁰ = 51041416831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51042465401) 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, 25521232703 + 25521232704.

It is an arithmetic number, because the mean of its divisors is an integer number (25521232704).

Almost surely, 2^51042465407 is an apocalyptic number.

51042465407 is a deficient number, since it is larger than the sum of its proper divisors (1).

51042465407 is an equidigital number, since it uses as much as digits as its factorization.

51042465407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 51042465407 in words is "fifty-one billion, forty-two million, four hundred sixty-five thousand, four hundred seven".