51533167979 has 2 divisors, whose sum is σ = 51533167980. Its totient is φ = 51533167978.

The previous prime is 51533167963. The next prime is 51533168003. The reversal of 51533167979 is 97976133515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51533167979 - 2⁴ = 51533167963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51533167949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25766583989 + 25766583990.

It is an arithmetic number, because the mean of its divisors is an integer number (25766583990).

Almost surely, 2^51533167979 is an apocalyptic number.

51533167979 is a deficient number, since it is larger than the sum of its proper divisors (1).

51533167979 is an equidigital number, since it uses as much as digits as its factorization.

51533167979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5358150, while the sum is 56.

The spelling of 51533167979 in words is "fifty-one billion, five hundred thirty-three million, one hundred sixty-seven thousand, nine hundred seventy-nine".