3639974333522 has 18 divisors (see below), whose sum is σ = 5800101395247. Its totient is φ = 1712907513024.

The previous prime is 3639974333453. The next prime is 3639974333531. The reversal of 3639974333522 is 2253334799363.

It can be written as a sum of positive squares in 5 ways, for example, as 2875327271041 + 764647062481 = 1695679^2 + 874441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1349069.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45828668 + ... + 45908024.

Almost surely, 2^{3639974333522} is an apocalyptic number.

3639974333522 is a deficient number, since it is larger than the sum of its proper divisors (2160127061725).

3639974333522 is an frugal number, since it uses more digits than its factorization.

3639974333522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158750 (or 79376 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 59.

The spelling of 3639974333522 in words is "three trillion, six hundred thirty-nine billion, nine hundred seventy-four million, three hundred thirty-three thousand, five hundred twenty-two".