3639981620004 has 24 divisors (see below), whose sum is σ = 8494054611840. Its totient is φ = 1213218040224.

The previous prime is 3639981619949. The next prime is 3639981620059. The reversal of 3639981620004 is 4000261899363.

It is an interprime number because it is at equal distance from previous prime (3639981619949) and next prime (3639981620059).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13506819 + ... + 13773674.

It is an arithmetic number, because the mean of its divisors is an integer number (353918942160).

Almost surely, 2^{3639981620004} is an apocalyptic number.

It is an amenable number.

3639981620004 is an abundant number, since it is smaller than the sum of its proper divisors (4854072991836).

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

3639981620004 is a wasteful number, since it uses less digits than its factorization.

3639981620004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27291619 (or 27291617 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 3639981620004 in words is "three trillion, six hundred thirty-nine billion, nine hundred eighty-one million, six hundred twenty thousand, four".