3638204022040 has 32 divisors (see below), whose sum is σ = 9355381771680. Its totient is φ = 1247384236032.

The previous prime is 3638204022031. The next prime is 3638204022127. The reversal of 3638204022040 is 402204028363.

It is a junction number, because it is equal to n+sod(n) for n = 3638204021987 and 3638204022005.

It is a congruent number.

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, 6496792617 + ... + 6496793176.

It is an arithmetic number, because the mean of its divisors is an integer number (292355680365).

Almost surely, 2^{3638204022040} is an apocalyptic number.

It is an amenable number.

3638204022040 is an abundant number, since it is smaller than the sum of its proper divisors (5717177749640).

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

3638204022040 is a wasteful number, since it uses less digits than its factorization.

3638204022040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993585811 (or 12993585807 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 3638204022040 in words is "three trillion, six hundred thirty-eight billion, two hundred four million, twenty-two thousand, forty".