51506320967 has 2 divisors, whose sum is σ = 51506320968. Its totient is φ = 51506320966.

The previous prime is 51506320771. The next prime is 51506320991. The reversal of 51506320967 is 76902360515.

51506320967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51506320967 - 2⁸ = 51506320711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51506370967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25753160483 + 25753160484.

It is an arithmetic number, because the mean of its divisors is an integer number (25753160484).

Almost surely, 2^51506320967 is an apocalyptic number.

51506320967 is a deficient number, since it is larger than the sum of its proper divisors (1).

51506320967 is an equidigital number, since it uses as much as digits as its factorization.

51506320967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 51506320967 in words is "fifty-one billion, five hundred six million, three hundred twenty thousand, nine hundred sixty-seven".