3661838854744 has 128 divisors (see below), whose sum is σ = 8820241920000. Its totient is φ = 1389187376640.

The previous prime is 3661838854721. The next prime is 3661838854847. The reversal of 3661838854744 is 4474588381663.

It is a super-2 number, since 2×3661838854744² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3661838854744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957579 + ... + 2870650.

It is an arithmetic number, because the mean of its divisors is an integer number (68908140000).

Almost surely, 2^{3661838854744} is an apocalyptic number.

It is an amenable number.

3661838854744 is an abundant number, since it is smaller than the sum of its proper divisors (5158403065256).

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

3661838854744 is a wasteful number, since it uses less digits than its factorization.

3661838854744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828321 (or 3828317 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 67.

The spelling of 3661838854744 in words is "three trillion, six hundred sixty-one billion, eight hundred thirty-eight million, eight hundred fifty-four thousand, seven hundred forty-four".