78619689258 has 48 divisors (see below), whose sum is σ = 181929891360. Its totient is φ = 22570241760.

The previous prime is 78619689241. The next prime is 78619689259. The reversal of 78619689258 is 85298691687.

It is a junction number, because it is equal to n+sod(n) for n = 78619689192 and 78619689201.

It is not an unprimeable number, because it can be changed into a prime (78619689259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2835985 + ... + 2863572.

It is an arithmetic number, because the mean of its divisors is an integer number (3790206070).

Almost surely, 2^78619689258 is an apocalyptic number.

78619689258 is an abundant number, since it is smaller than the sum of its proper divisors (103310202102).

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

78619689258 is a wasteful number, since it uses less digits than its factorization.

78619689258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699603 (or 5699592 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 69.

The spelling of 78619689258 in words is "seventy-eight billion, six hundred nineteen million, six hundred eighty-nine thousand, two hundred fifty-eight".