65913691862493 has 28 divisors (see below), whose sum is σ = 99748930828608. Its totient is φ = 43531783982280.

The previous prime is 65913691862471. The next prime is 65913691862533. The reversal of 65913691862493 is 39426819631956.

65913691862493 is a `hidden beast` number, since 6 + 5 + 9 + 1 + 3 + 69 + 18 + 62 + 493 = 666.

It is not a de Polignac number, because 65913691862493 - 2²⁶ = 65913624753629 is a prime.

It is a super-2 number, since 2×65913691862493² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65913691822493) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 422429413 + ... + 422585418.

Almost surely, 2^{65913691862493} is an apocalyptic number.

It is an amenable number.

65913691862493 is a deficient number, since it is larger than the sum of its proper divisors (33835238966115).

65913691862493 is an equidigital number, since it uses as much as digits as its factorization.

65913691862493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845014956 (or 845014941 counting only the distinct ones).

The product of its digits is 453496320, while the sum is 72.

The spelling of 65913691862493 in words is "sixty-five trillion, nine hundred thirteen billion, six hundred ninety-one million, eight hundred sixty-two thousand, four hundred ninety-three".