3661494326972 has 12 divisors (see below), whose sum is σ = 6628567316280. Its totient is φ = 1767617950896.

The previous prime is 3661494326947. The next prime is 3661494326977. The reversal of 3661494326972 is 2796234941663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661494326977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15782303018 + ... + 15782303249.

It is an arithmetic number, because the mean of its divisors is an integer number (552380609690).

Almost surely, 2^{3661494326972} is an apocalyptic number.

It is an amenable number.

3661494326972 is a deficient number, since it is larger than the sum of its proper divisors (2967072989308).

3661494326972 is a wasteful number, since it uses less digits than its factorization.

3661494326972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31564606300 (or 31564606298 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 62.

The spelling of 3661494326972 in words is "three trillion, six hundred sixty-one billion, four hundred ninety-four million, three hundred twenty-six thousand, nine hundred seventy-two".