3661604362506 has 32 divisors (see below), whose sum is σ = 7494009984000. Its totient is φ = 1192171996656.

The previous prime is 3661604362499. The next prime is 3661604362517. The reversal of 3661604362506 is 6052634061663.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12869716 + ... + 13151151.

It is an arithmetic number, because the mean of its divisors is an integer number (234187812000).

Almost surely, 2^{3661604362506} is an apocalyptic number.

3661604362506 is an abundant number, since it is smaller than the sum of its proper divisors (3832405621494).

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

3661604362506 is a wasteful number, since it uses less digits than its factorization.

3661604362506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26021418.

The product of its (nonzero) digits is 2799360, while the sum is 48.

The spelling of 3661604362506 in words is "three trillion, six hundred sixty-one billion, six hundred four million, three hundred sixty-two thousand, five hundred six".