65912507971 has 2 divisors, whose sum is σ = 65912507972. Its totient is φ = 65912507970.

The previous prime is 65912507957. The next prime is 65912507977. The reversal of 65912507971 is 17970521956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65912507971 - 2⁵ = 65912507939 is a prime.

It is not a weakly prime, because it can be changed into another prime (65912507977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32956253985 + 32956253986.

It is an arithmetic number, because the mean of its divisors is an integer number (32956253986).

Almost surely, 2^65912507971 is an apocalyptic number.

65912507971 is a deficient number, since it is larger than the sum of its proper divisors (1).

65912507971 is an equidigital number, since it uses as much as digits as its factorization.

65912507971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1190700, while the sum is 52.

The spelling of 65912507971 in words is "sixty-five billion, nine hundred twelve million, five hundred seven thousand, nine hundred seventy-one".