3636390657744 has 240 divisors, whose sum is σ = 11379564827904. Its totient is φ = 1117513843200.

The previous prime is 3636390657727. The next prime is 3636390657751. The reversal of 3636390657744 is 4477560936363.

3636390657744 is a `hidden beast` number, since 363 + 63 + 90 + 65 + 7 + 74 + 4 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41452809 + ... + 41540439.

Almost surely, 2^{3636390657744} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3636390657744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5689782413952).

3636390657744 is an abundant number, since it is smaller than the sum of its proper divisors (7743174170160).

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

3636390657744 is a wasteful number, since it uses less digits than its factorization.

3636390657744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88488 (or 88470 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 63.

The spelling of 3636390657744 in words is "three trillion, six hundred thirty-six billion, three hundred ninety million, six hundred fifty-seven thousand, seven hundred forty-four".