7139716816 has 20 divisors (see below), whose sum is σ = 13975814692. Its totient is φ = 3533054976.

The previous prime is 7139716813. The next prime is 7139716823. The reversal of 7139716816 is 6186179317.

It can be written as a sum of positive squares in 2 ways, for example, as 2875104400 + 4264612416 = 53620^2 + 65304^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7139716816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7139716813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298615 + ... + 2301718.

Almost surely, 2^7139716816 is an apocalyptic number.

It is an amenable number.

7139716816 is a deficient number, since it is larger than the sum of its proper divisors (6836097876).

7139716816 is a wasteful number, since it uses less digits than its factorization.

7139716816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600438 (or 4600432 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

The square root of 7139716816 is about 84496.8450061894. The cubic root of 7139716816 is about 1925.5745125934.

The spelling of 7139716816 in words is "seven billion, one hundred thirty-nine million, seven hundred sixteen thousand, eight hundred sixteen".