13666497802 has 16 divisors (see below), whose sum is σ = 21590704800. Its totient is φ = 6469997040.

The previous prime is 13666497769. The next prime is 13666497893. The reversal of 13666497802 is 20879466631.

It is a super-3 number, since 3×13666497802³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13666497802.

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, 30477 + ... + 168112.

It is an arithmetic number, because the mean of its divisors is an integer number (1349419050).

Almost surely, 2^13666497802 is an apocalyptic number.

13666497802 is a deficient number, since it is larger than the sum of its proper divisors (7924206998).

13666497802 is a wasteful number, since it uses less digits than its factorization.

13666497802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200421.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 13666497802 in words is "thirteen billion, six hundred sixty-six million, four hundred ninety-seven thousand, eight hundred two".