78156604860 has 48 divisors (see below), whose sum is σ = 226384653600. Its totient is φ = 20123079424.

The previous prime is 78156604859. The next prime is 78156604891. The reversal of 78156604860 is 6840665187.

It is a super-2 number, since 2×78156604860² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 22457055 + ... + 22460534.

It is an arithmetic number, because the mean of its divisors is an integer number (4716346950).

Almost surely, 2^78156604860 is an apocalyptic number.

It is an amenable number.

78156604860 is an abundant number, since it is smaller than the sum of its proper divisors (148228048740).

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

78156604860 is a wasteful number, since it uses less digits than its factorization.

78156604860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44917630 (or 44917628 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 78156604860 in words is "seventy-eight billion, one hundred fifty-six million, six hundred four thousand, eight hundred sixty".