51813633167 has 2 divisors, whose sum is σ = 51813633168. Its totient is φ = 51813633166.

The previous prime is 51813633149. The next prime is 51813633173. The reversal of 51813633167 is 76133631815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51813633167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51813633367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25906816583 + 25906816584.

It is an arithmetic number, because the mean of its divisors is an integer number (25906816584).

Almost surely, 2^51813633167 is an apocalyptic number.

51813633167 is a deficient number, since it is larger than the sum of its proper divisors (1).

51813633167 is an equidigital number, since it uses as much as digits as its factorization.

51813633167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The spelling of 51813633167 in words is "fifty-one billion, eight hundred thirteen million, six hundred thirty-three thousand, one hundred sixty-seven".