78659005850 has 12 divisors (see below), whose sum is σ = 146305750974. Its totient is φ = 31463602320.

The previous prime is 78659005823. The next prime is 78659005913. The reversal of 78659005850 is 5850095687.

It can be written as a sum of positive squares in 3 ways, for example, as 61404344401 + 17254661449 = 247799^2 + 131357^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78659005792 and 78659005801.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786590009 + ... + 786590108.

Almost surely, 2^78659005850 is an apocalyptic number.

78659005850 is a deficient number, since it is larger than the sum of its proper divisors (67646745124).

78659005850 is a wasteful number, since it uses less digits than its factorization.

78659005850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573180129 (or 1573180124 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 78659005850 in words is "seventy-eight billion, six hundred fifty-nine million, five thousand, eight hundred fifty".