78156602496 has 576 divisors, whose sum is σ = 280548290880. Its totient is φ = 20769509376.

The previous prime is 78156602483. The next prime is 78156602507. The reversal of 78156602496 is 69420665187.

78156602496 is a `hidden beast` number, since 78 + 1 + 566 + 0 + 2 + 4 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×78156602496² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48036435 + ... + 48038061.

It is an arithmetic number, because the mean of its divisors is an integer number (487063005).

Almost surely, 2^78156602496 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 78156602496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140274145440).

78156602496 is an abundant number, since it is smaller than the sum of its proper divisors (202391688384).

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

78156602496 is a wasteful number, since it uses less digits than its factorization.

78156602496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 78156602496 in words is "seventy-eight billion, one hundred fifty-six million, six hundred two thousand, four hundred ninety-six".