65759091992 has 32 divisors (see below), whose sum is σ = 138846182400. Its totient is φ = 28926285600.

The previous prime is 65759091947. The next prime is 65759092031. The reversal of 65759091992 is 29919095756.

It is a happy number.

65759091992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65759091992² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12049892 + ... + 12055347.

It is an arithmetic number, because the mean of its divisors is an integer number (4338943200).

Almost surely, 2^65759091992 is an apocalyptic number.

65759091992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65759091992 is an abundant number, since it is smaller than the sum of its proper divisors (73087090408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65759091992 is a wasteful number, since it uses less digits than its factorization.

65759091992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24105287 (or 24105283 counting only the distinct ones).

The product of its (nonzero) digits is 13778100, while the sum is 62.

The spelling of 65759091992 in words is "sixty-five billion, seven hundred fifty-nine million, ninety-one thousand, nine hundred ninety-two".