78860724840 has 192 divisors, whose sum is σ = 261610689600. Its totient is φ = 20598014976.

The previous prime is 78860724829. The next prime is 78860724851. The reversal of 78860724840 is 4842706887.

It is a happy number.

78860724840 is a `hidden beast` number, since 7 + 8 + 8 + 607 + 24 + 8 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (78860724829) and next prime (78860724851).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3416779 + ... + 3439781.

It is an arithmetic number, because the mean of its divisors is an integer number (1362555675).

Almost surely, 2^78860724840 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 78860724840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130805344800).

78860724840 is an abundant number, since it is smaller than the sum of its proper divisors (182749964760).

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

78860724840 is a wasteful number, since it uses less digits than its factorization.

78860724840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23216 (or 23209 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 78860724840 in words is "seventy-eight billion, eight hundred sixty million, seven hundred twenty-four thousand, eight hundred forty".