68379565824 has 144 divisors (see below), whose sum is σ = 202584846240. Its totient is φ = 22750986240.

The previous prime is 68379565819. The next prime is 68379565831. The reversal of 68379565824 is 42856597386.

It is a happy number.

68379565824 is a `hidden beast` number, since 68 + 3 + 7 + 9 + 565 + 8 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3841104 + ... + 3858864.

It is an arithmetic number, because the mean of its divisors is an integer number (1406839210).

Almost surely, 2^68379565824 is an apocalyptic number.

68379565824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68379565824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101292423120).

68379565824 is an abundant number, since it is smaller than the sum of its proper divisors (134205280416).

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

68379565824 is a wasteful number, since it uses less digits than its factorization.

68379565824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18343 (or 18323 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 68379565824 in words is "sixty-eight billion, three hundred seventy-nine million, five hundred sixty-five thousand, eight hundred twenty-four".