78653818152 has 576 divisors, whose sum is σ = 285461729280. Its totient is φ = 19828613376.

The previous prime is 78653818151. The next prime is 78653818189. The reversal of 78653818152 is 25181835687.

78653818152 is a `hidden beast` number, since 7 + 86 + 538 + 18 + 15 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (78653818151) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 52893553 + ... + 52895039.

It is an arithmetic number, because the mean of its divisors is an integer number (495593280).

Almost surely, 2^78653818152 is an apocalyptic number.

78653818152 is a gapful number since it is divisible by the number (72) 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 78653818152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142730864640).

78653818152 is an abundant number, since it is smaller than the sum of its proper divisors (206807911128).

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

78653818152 is a wasteful number, since it uses less digits than its factorization.

78653818152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1535 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 78653818152 in words is "seventy-eight billion, six hundred fifty-three million, eight hundred eighteen thousand, one hundred fifty-two".