78587228658 has 16 divisors (see below), whose sum is σ = 157212316800. Its totient is φ = 26189432976.

The previous prime is 78587228627. The next prime is 78587228719. The reversal of 78587228658 is 85682278587.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550458 + ... + 1600341.

It is an arithmetic number, because the mean of its divisors is an integer number (9825769800).

Almost surely, 2^78587228658 is an apocalyptic number.

78587228658 is an abundant number, since it is smaller than the sum of its proper divisors (78625088142).

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

78587228658 is a wasteful number, since it uses less digits than its factorization.

78587228658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154961.

The product of its digits is 120422400, while the sum is 66.

The spelling of 78587228658 in words is "seventy-eight billion, five hundred eighty-seven million, two hundred twenty-eight thousand, six hundred fifty-eight".