3601638740644 has 12 divisors (see below), whose sum is σ = 7203277481344. Its totient is φ = 1543559460264.

The previous prime is 3601638740627. The next prime is 3601638740659. The reversal of 3601638740644 is 4460478361063.

3601638740644 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3601638740591 and 3601638740600.

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 3 ways as a sum of consecutive naturals, for example, 64314977484 + ... + 64314977539.

Almost surely, 2^{3601638740644} is an apocalyptic number.

It is an amenable number.

3601638740644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3601638740644 is a wasteful number, since it uses less digits than its factorization.

3601638740644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128629955034 (or 128629955032 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 3601638740644 in words is "three trillion, six hundred one billion, six hundred thirty-eight million, seven hundred forty thousand, six hundred forty-four".