65624988313 has 2 divisors, whose sum is σ = 65624988314. Its totient is φ = 65624988312.

The previous prime is 65624988271. The next prime is 65624988323. The reversal of 65624988313 is 31388942656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39488446089 + 26136542224 = 198717^2 + 161668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65624988313 is a prime.

It is not a weakly prime, because it can be changed into another prime (65624988323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32812494156 + 32812494157.

It is an arithmetic number, because the mean of its divisors is an integer number (32812494157).

Almost surely, 2^65624988313 is an apocalyptic number.

It is an amenable number.

65624988313 is a deficient number, since it is larger than the sum of its proper divisors (1).

65624988313 is an equidigital number, since it uses as much as digits as its factorization.

65624988313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 55.

The spelling of 65624988313 in words is "sixty-five billion, six hundred twenty-four million, nine hundred eighty-eight thousand, three hundred thirteen".