51298905667 has 2 divisors, whose sum is σ = 51298905668. Its totient is φ = 51298905666.

The previous prime is 51298905589. The next prime is 51298905677. The reversal of 51298905667 is 76650989215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51298905667 - 2²⁷ = 51164687939 is a prime.

It is not a weakly prime, because it can be changed into another prime (51298905677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25649452833 + 25649452834.

It is an arithmetic number, because the mean of its divisors is an integer number (25649452834).

Almost surely, 2^51298905667 is an apocalyptic number.

51298905667 is a deficient number, since it is larger than the sum of its proper divisors (1).

51298905667 is an equidigital number, since it uses as much as digits as its factorization.

51298905667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 51298905667 in words is "fifty-one billion, two hundred ninety-eight million, nine hundred five thousand, six hundred sixty-seven".