7139886660 has 72 divisors (see below), whose sum is σ = 21828258816. Its totient is φ = 1888971840.

The previous prime is 7139886659. The next prime is 7139886683. The reversal of 7139886660 is 666889317.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7139886597 and 7139886606.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133306 + ... + 179025.

Almost surely, 2^7139886660 is an apocalyptic number.

It is an amenable number.

7139886660 is an abundant number, since it is smaller than the sum of its proper divisors (14688372156).

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

7139886660 is a wasteful number, since it uses less digits than its factorization.

7139886660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312473 (or 312468 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 7139886660 is about 84497.8500318203. The cubic root of 7139886660 is about 1925.5897813915.

The spelling of 7139886660 in words is "seven billion, one hundred thirty-nine million, eight hundred eighty-six thousand, six hundred sixty".