51507662570659 has 2 divisors, whose sum is σ = 51507662570660. Its totient is φ = 51507662570658.

The previous prime is 51507662570627. The next prime is 51507662570701. The reversal of 51507662570659 is 95607526670515.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51507662570659 - 2⁵ = 51507662570627 is a prime.

It is a super-2 number, since 2×51507662570659² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51507662570659.

It is not a weakly prime, because it can be changed into another prime (51507662570359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25753831285329 + 25753831285330.

It is an arithmetic number, because the mean of its divisors is an integer number (25753831285330).

Almost surely, 2^{51507662570659} is an apocalyptic number.

51507662570659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51507662570659 is an equidigital number, since it uses as much as digits as its factorization.

51507662570659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070000, while the sum is 64.

The spelling of 51507662570659 in words is "fifty-one trillion, five hundred seven billion, six hundred sixty-two million, five hundred seventy thousand, six hundred fifty-nine".