78623459052 has 96 divisors (see below), whose sum is σ = 195695958528. Its totient is φ = 24482540544.

The previous prime is 78623459039. The next prime is 78623459093. The reversal of 78623459052 is 25095432687.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 78623458986 and 78623459004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32261178 + ... + 32263614.

It is an arithmetic number, because the mean of its divisors is an integer number (2038499568).

Almost surely, 2^78623459052 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 78623459052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97847979264).

78623459052 is an abundant number, since it is smaller than the sum of its proper divisors (117072499476).

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

78623459052 is a wasteful number, since it uses less digits than its factorization.

78623459052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 78623459052 in words is "seventy-eight billion, six hundred twenty-three million, four hundred fifty-nine thousand, fifty-two".