79054568640 has 168 divisors, whose sum is σ = 272056085808. Its totient is φ = 21070264320.

The previous prime is 79054568633. The next prime is 79054568647. The reversal of 79054568640 is 4686545097.

79054568640 is a `hidden beast` number, since 7 + 90 + 545 + 6 + 8 + 6 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (79054568633) and next prime (79054568647).

It is not an unprimeable number, because it can be changed into a prime (79054568647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6597855 + ... + 6609825.

Almost surely, 2^79054568640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79054568640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136028042904).

79054568640 is an abundant number, since it is smaller than the sum of its proper divisors (193001517168).

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

79054568640 is a wasteful number, since it uses less digits than its factorization.

79054568640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14287 (or 14274 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 79054568640 in words is "seventy-nine billion, fifty-four million, five hundred sixty-eight thousand, six hundred forty".