78812622152 has 32 divisors (see below), whose sum is σ = 161248471200. Its totient is φ = 35814844800.

The previous prime is 78812622151. The next prime is 78812622179. The reversal of 78812622152 is 25122621887.

It is a super-2 number, since 2×78812622152² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (78812622151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242252 + ... + 465092.

It is an arithmetic number, because the mean of its divisors is an integer number (5039014725).

Almost surely, 2^78812622152 is an apocalyptic number.

It is an amenable number.

78812622152 is an abundant number, since it is smaller than the sum of its proper divisors (82435849048).

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

78812622152 is a wasteful number, since it uses less digits than its factorization.

78812622152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226877 (or 226873 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The spelling of 78812622152 in words is "seventy-eight billion, eight hundred twelve million, six hundred twenty-two thousand, one hundred fifty-two".