6413631566365 has 16 divisors (see below), whose sum is σ = 7965964666800. Its totient is φ = 4951354734592.

The previous prime is 6413631566359. The next prime is 6413631566387. The reversal of 6413631566365 is 5636651363146.

It can be written as a sum of positive squares in 8 ways, for example, as 78513721209 + 6335117845156 = 280203^2 + 2516966^2 .

It is a cyclic number.

It is not a de Polignac number, because 6413631566365 - 2³ = 6413631566357 is a prime.

It is a super-2 number, since 2×6413631566365² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11433862 + ... + 11981671.

It is an arithmetic number, because the mean of its divisors is an integer number (497872791675).

Almost surely, 2^{6413631566365} is an apocalyptic number.

It is an amenable number.

6413631566365 is a deficient number, since it is larger than the sum of its proper divisors (1552333100435).

6413631566365 is a wasteful number, since it uses less digits than its factorization.

6413631566365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23417456.

The product of its digits is 20995200, while the sum is 55.

The spelling of 6413631566365 in words is "six trillion, four hundred thirteen billion, six hundred thirty-one million, five hundred sixty-six thousand, three hundred sixty-five".