13566440377 has 8 divisors (see below), whose sum is σ = 15716894336. Its totient is φ = 11469084192.

The previous prime is 13566440311. The next prime is 13566440383. The reversal of 13566440377 is 77304466531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13566440377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13566441377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13273893 + ... + 13274914.

It is an arithmetic number, because the mean of its divisors is an integer number (1964611792).

Almost surely, 2^13566440377 is an apocalyptic number.

It is an amenable number.

13566440377 is a deficient number, since it is larger than the sum of its proper divisors (2150453959).

13566440377 is an equidigital number, since it uses as much as digits as its factorization.

13566440377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548887.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 13566440377 in words is "thirteen billion, five hundred sixty-six million, four hundred forty thousand, three hundred seventy-seven".