78859238460 has 96 divisors (see below), whose sum is σ = 226470081600. Its totient is φ = 20490946560.

The previous prime is 78859238449. The next prime is 78859238551. The reversal of 78859238460 is 6483295887.

It is a super-2 number, since 2×78859238460² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 78859238394 and 78859238403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2020006 + ... + 2058674.

It is an arithmetic number, because the mean of its divisors is an integer number (2359063350).

Almost surely, 2^78859238460 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 78859238460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113235040800).

78859238460 is an abundant number, since it is smaller than the sum of its proper divisors (147610843140).

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

78859238460 is a wasteful number, since it uses less digits than its factorization.

78859238460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39551 (or 39549 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 78859238460 in words is "seventy-eight billion, eight hundred fifty-nine million, two hundred thirty-eight thousand, four hundred sixty".