3666686835344 has 40 divisors (see below), whose sum is σ = 7651682495352. Its totient is φ = 1692095938560.

The previous prime is 3666686835337. The next prime is 3666686835379. The reversal of 3666686835344 is 4435386866663.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 632680249744 + 3034006585600 = 795412^2 + 1741840^2 .

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, 450122 + ... + 2745174.

Almost surely, 2^{3666686835344} is an apocalyptic number.

It is an amenable number.

3666686835344 is an abundant number, since it is smaller than the sum of its proper divisors (3984995660008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3666686835344 is a wasteful number, since it uses less digits than its factorization.

3666686835344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302755 (or 2302749 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 68.

The spelling of 3666686835344 in words is "three trillion, six hundred sixty-six billion, six hundred eighty-six million, eight hundred thirty-five thousand, three hundred forty-four".