3609944734464 has 504 divisors, whose sum is σ = 11181755569152. Its totient is φ = 1161420871680.

The previous prime is 3609944734423. The next prime is 3609944734481. The reversal of 3609944734464 is 4644374499063.

3609944734464 is a `hidden beast` number, since 3 + 6 + 0 + 99 + 447 + 3 + 44 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3395996397 + ... + 3395997459.

Almost surely, 2^{3609944734464} 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 3609944734464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5590877784576).

3609944734464 is an abundant number, since it is smaller than the sum of its proper divisors (7571810834688).

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

3609944734464 is an equidigital number, since it uses as much as digits as its factorization.

3609944734464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 63.

The spelling of 3609944734464 in words is "three trillion, six hundred nine billion, nine hundred forty-four million, seven hundred thirty-four thousand, four hundred sixty-four".