78959867532 has 144 divisors (see below), whose sum is σ = 231015062880. Its totient is φ = 20805700608.

The previous prime is 78959867431. The next prime is 78959867543. The reversal of 78959867532 is 23576895987.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9757344 + ... + 9765432.

It is an arithmetic number, because the mean of its divisors is an integer number (1604271270).

Almost surely, 2^78959867532 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 78959867532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115507531440).

78959867532 is an abundant number, since it is smaller than the sum of its proper divisors (152055195348).

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

78959867532 is a wasteful number, since it uses less digits than its factorization.

78959867532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400 (or 9391 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 69.

The spelling of 78959867532 in words is "seventy-eight billion, nine hundred fifty-nine million, eight hundred sixty-seven thousand, five hundred thirty-two".