78116820752 has 80 divisors (see below), whose sum is σ = 157457779200. Its totient is φ = 37518512640.

The previous prime is 78116820739. The next prime is 78116820763. The reversal of 78116820752 is 25702861187.

It is a super-2 number, since 2×78116820752² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 78116820697 and 78116820706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12223574 + ... + 12229962.

It is an arithmetic number, because the mean of its divisors is an integer number (1968222240).

Almost surely, 2^78116820752 is an apocalyptic number.

It is an amenable number.

78116820752 is an abundant number, since it is smaller than the sum of its proper divisors (79340958448).

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

78116820752 is a wasteful number, since it uses less digits than its factorization.

78116820752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744 (or 6738 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 78116820752 in words is "seventy-eight billion, one hundred sixteen million, eight hundred twenty thousand, seven hundred fifty-two".