64100685410689 has 2 divisors, whose sum is σ = 64100685410690. Its totient is φ = 64100685410688.

The previous prime is 64100685410653. The next prime is 64100685410701. The reversal of 64100685410689 is 98601458600146.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64009472350464 + 91213060225 = 8000592^2 + 302015^2 .

It is a cyclic number.

It is not a de Polignac number, because 64100685410689 - 2¹³ = 64100685402497 is a prime.

It is a super-2 number, since 2×64100685410689² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64100685411689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32050342705344 + 32050342705345.

It is an arithmetic number, because the mean of its divisors is an integer number (32050342705345).

Almost surely, 2^{64100685410689} is an apocalyptic number.

It is an amenable number.

64100685410689 is a deficient number, since it is larger than the sum of its proper divisors (1).

64100685410689 is an equidigital number, since it uses as much as digits as its factorization.

64100685410689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 64100685410689 in words is "sixty-four trillion, one hundred billion, six hundred eighty-five million, four hundred ten thousand, six hundred eighty-nine".