13124066666 has 16 divisors (see below), whose sum is σ = 19774537224. Its totient is φ = 6532614144.

The previous prime is 13124066653. The next prime is 13124066693. The reversal of 13124066666 is 66666042131.

It can be written as a sum of positive squares in 4 ways, for example, as 9094483225 + 4029583441 = 95365^2 + 63479^2 .

It is a super-2 number, since 2×13124066666² (a number of 21 digits) contains 22 as substring.

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, 439136 + ... + 468068.

Almost surely, 2^13124066666 is an apocalyptic number.

13124066666 is a deficient number, since it is larger than the sum of its proper divisors (6650470558).

13124066666 is a wasteful number, since it uses less digits than its factorization.

13124066666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29945.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 13124066666 in words is "thirteen billion, one hundred twenty-four million, sixty-six thousand, six hundred sixty-six".