13105666615 has 8 divisors (see below), whose sum is σ = 15731071488. Its totient is φ = 10481685600.

The previous prime is 13105666603. The next prime is 13105666621. The reversal of 13105666615 is 51666650131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13105666615 - 2⁷ = 13105666487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335607 + ... + 372616.

It is an arithmetic number, because the mean of its divisors is an integer number (1966383936).

Almost surely, 2^13105666615 is an apocalyptic number.

13105666615 is a deficient number, since it is larger than the sum of its proper divisors (2625404873).

13105666615 is an equidigital number, since it uses as much as digits as its factorization.

13105666615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711929.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 13105666615 in words is "thirteen billion, one hundred five million, six hundred sixty-six thousand, six hundred fifteen".