6316826315661 has 12 divisors (see below), whose sum is σ = 9144097102140. Its totient is φ = 4202082578880.

The previous prime is 6316826315599. The next prime is 6316826315669. The reversal of 6316826315661 is 1665136286136.

6316826315661 is a `hidden beast` number, since 6 + 3 + 16 + 8 + 2 + 63 + 1 + 566 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2227153293225 + 4089673022436 = 1492365^2 + 2022294^2 .

It is not a de Polignac number, because 6316826315661 - 2²⁵ = 6316792761229 is a prime.

It is a super-2 number, since 2×6316826315661² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6316826315598 and 6316826315607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6316826315669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 761242696 + ... + 761250993.

It is an arithmetic number, because the mean of its divisors is an integer number (762008091845).

Almost surely, 2^{6316826315661} is an apocalyptic number.

It is an amenable number.

6316826315661 is a deficient number, since it is larger than the sum of its proper divisors (2827270786479).

6316826315661 is a wasteful number, since it uses less digits than its factorization.

6316826315661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522494156 (or 1522494153 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 6316826315661 in words is "six trillion, three hundred sixteen billion, eight hundred twenty-six million, three hundred fifteen thousand, six hundred sixty-one".