3621740338944 has 576 divisors, whose sum is σ = 13875509222400. Its totient is φ = 904908423168.

The previous prime is 3621740338919. The next prime is 3621740338987. The reversal of 3621740338944 is 4498330471263.

It is a happy number.

3621740338944 is a `hidden beast` number, since 3 + 6 + 217 + 4 + 0 + 3 + 389 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11799322 + ... + 12102374.

Almost surely, 2^{3621740338944} 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 3621740338944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6937754611200).

3621740338944 is an abundant number, since it is smaller than the sum of its proper divisors (10253768883456).

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

3621740338944 is a wasteful number, since it uses less digits than its factorization.

3621740338944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303117 (or 303097 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 3621740338944 in words is "three trillion, six hundred twenty-one billion, seven hundred forty million, three hundred thirty-eight thousand, nine hundred forty-four".