3666727915794 has 40 divisors (see below), whose sum is σ = 8216383097340. Its totient is φ = 1222213411584.

The previous prime is 3666727915789. The next prime is 3666727915813. The reversal of 3666727915794 is 4975197276663.

It can be written as a sum of positive squares in 2 ways, for example, as 2827190030625 + 839537885169 = 1681425^2 + 916263^2 .

It is a super-2 number, since 2×3666727915794² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7151242 + ... + 7646810.

Almost surely, 2^{3666727915794} is an apocalyptic number.

3666727915794 is an abundant number, since it is smaller than the sum of its proper divisors (4549655181546).

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

3666727915794 is a wasteful number, since it uses less digits than its factorization.

3666727915794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541256 (or 541247 counting only the distinct ones).

The product of its digits is 720135360, while the sum is 72.

The spelling of 3666727915794 in words is "three trillion, six hundred sixty-six billion, seven hundred twenty-seven million, nine hundred fifteen thousand, seven hundred ninety-four".