13566461613 has 16 divisors (see below), whose sum is σ = 18314412480. Its totient is φ = 8931810816.

The previous prime is 13566461563. The next prime is 13566461621. The reversal of 13566461613 is 31616466531.

It is not a de Polignac number, because 13566461613 - 2²² = 13562267309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13566461113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85983 + ... + 185811.

It is an arithmetic number, because the mean of its divisors is an integer number (1144650780).

Almost surely, 2^13566461613 is an apocalyptic number.

It is an amenable number.

13566461613 is a deficient number, since it is larger than the sum of its proper divisors (4747950867).

13566461613 is an equidigital number, since it uses as much as digits as its factorization.

13566461613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100396.

The product of its digits is 233280, while the sum is 42.

The spelling of 13566461613 in words is "thirteen billion, five hundred sixty-six million, four hundred sixty-one thousand, six hundred thirteen".