65813920893 has 12 divisors (see below), whose sum is σ = 108645202848. Its totient is φ = 37607954760.

The previous prime is 65813920889. The next prime is 65813920897. The reversal of 65813920893 is 39802931856.

65813920893 is a `hidden beast` number, since 6 + 581 + 39 + 20 + 8 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (65813920889) and next prime (65813920897).

It is not a de Polignac number, because 65813920893 - 2² = 65813920889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65813920897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522332643 + ... + 522332768.

It is an arithmetic number, because the mean of its divisors is an integer number (9053766904).

Almost surely, 2^65813920893 is an apocalyptic number.

65813920893 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65813920893 is a deficient number, since it is larger than the sum of its proper divisors (42831281955).

65813920893 is a wasteful number, since it uses less digits than its factorization.

65813920893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044665424 (or 1044665421 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 65813920893 in words is "sixty-five billion, eight hundred thirteen million, nine hundred twenty thousand, eight hundred ninety-three".