8478749130786 has 36 divisors (see below), whose sum is σ = 20192503100406. Its totient is φ = 2569317917760.

The previous prime is 8478749130743. The next prime is 8478749130799. The reversal of 8478749130786 is 6870319478748.

8478749130786 is a `hidden beast` number, since 8 + 478 + 7 + 49 + 1 + 30 + 7 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6589001279025 + 1889747851761 = 2566905^2 + 1374681^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1946450791 + ... + 1946455146.

Almost surely, 2^{8478749130786} is an apocalyptic number.

8478749130786 is an abundant number, since it is smaller than the sum of its proper divisors (11713753969620).

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

8478749130786 is a wasteful number, since it uses less digits than its factorization.

8478749130786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892905967 (or 3892905953 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 72.

The spelling of 8478749130786 in words is "eight trillion, four hundred seventy-eight billion, seven hundred forty-nine million, one hundred thirty thousand, seven hundred eighty-six".