7855617316 has 12 divisors (see below), whose sum is σ = 13765400460. Its totient is φ = 3922645760.

The previous prime is 7855617313. The next prime is 7855617323. The reversal of 7855617316 is 6137165587.

It can be written as a sum of positive squares in 2 ways, for example, as 3081360100 + 4774257216 = 55510^2 + 69096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7855617316.

It is not an unprimeable number, because it can be changed into a prime (7855617313) 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, 1287301 + ... + 1293388.

It is an arithmetic number, because the mean of its divisors is an integer number (1147116705).

Almost surely, 2^7855617316 is an apocalyptic number.

It is an amenable number.

7855617316 is a deficient number, since it is larger than the sum of its proper divisors (5909783144).

7855617316 is a wasteful number, since it uses less digits than its factorization.

7855617316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581454 (or 2581452 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The square root of 7855617316 is about 88631.9204124564. The cubic root of 7855617316 is about 1987.8949918692.

The spelling of 7855617316 in words is "seven billion, eight hundred fifty-five million, six hundred seventeen thousand, three hundred sixteen".