13666412431 has 8 divisors (see below), whose sum is σ = 15883482240. Its totient is φ = 11515523928.

The previous prime is 13666412413. The next prime is 13666412471. The reversal of 13666412431 is 13421466631.

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

It is a cyclic number.

It is not a de Polignac number, because 13666412431 - 2¹³ = 13666404239 is a prime.

It is a super-2 number, since 2×13666412431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666412471) 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, 16544881 + ... + 16545706.

It is an arithmetic number, because the mean of its divisors is an integer number (1985435280).

Almost surely, 2^13666412431 is an apocalyptic number.

13666412431 is a deficient number, since it is larger than the sum of its proper divisors (2217069809).

13666412431 is an equidigital number, since it uses as much as digits as its factorization.

13666412431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33090653.

The product of its digits is 62208, while the sum is 37.

The spelling of 13666412431 in words is "thirteen billion, six hundred sixty-six million, four hundred twelve thousand, four hundred thirty-one".