3639745963776 has 144 divisors (see below), whose sum is σ = 10885762653696. Its totient is φ = 1071229513728.

The previous prime is 3639745963723. The next prime is 3639745963793. The reversal of 3639745963776 is 6773695479363.

3639745963776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3639745963698 and 3639745963707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7695540 + ... + 8154803.

It is an arithmetic number, because the mean of its divisors is an integer number (75595573984).

Almost surely, 2^{3639745963776} is an apocalyptic number.

It is an amenable number.

3639745963776 is an abundant number, since it is smaller than the sum of its proper divisors (7246016689920).

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

3639745963776 is a wasteful number, since it uses less digits than its factorization.

3639745963776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15850398 (or 15850384 counting only the distinct ones).

The product of its digits is 3240609120, while the sum is 75.

The spelling of 3639745963776 in words is "three trillion, six hundred thirty-nine billion, seven hundred forty-five million, nine hundred sixty-three thousand, seven hundred seventy-six".