65633280131 has 2 divisors, whose sum is σ = 65633280132. Its totient is φ = 65633280130.

The previous prime is 65633280127. The next prime is 65633280161. The reversal of 65633280131 is 13108233656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65633280131 - 2² = 65633280127 is a prime.

It is a super-2 number, since 2×65633280131² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65633280121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32816640065 + 32816640066.

It is an arithmetic number, because the mean of its divisors is an integer number (32816640066).

Almost surely, 2^65633280131 is an apocalyptic number.

65633280131 is a deficient number, since it is larger than the sum of its proper divisors (1).

65633280131 is an equidigital number, since it uses as much as digits as its factorization.

65633280131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 65633280131 in words is "sixty-five billion, six hundred thirty-three million, two hundred eighty thousand, one hundred thirty-one".