3655660618040 has 16 divisors (see below), whose sum is σ = 8225236390680. Its totient is φ = 1462264247200.

The previous prime is 3655660618031. The next prime is 3655660618133. The reversal of 3655660618040 is 408160665563.

It is a self number, because there is not a number n which added to its sum of digits gives 3655660618040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45695757686 + ... + 45695757765.

Almost surely, 2^{3655660618040} is an apocalyptic number.

It is an amenable number.

3655660618040 is an abundant number, since it is smaller than the sum of its proper divisors (4569575772640).

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

3655660618040 is a wasteful number, since it uses less digits than its factorization.

3655660618040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91391515462 (or 91391515458 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 3655660618040 in words is "three trillion, six hundred fifty-five billion, six hundred sixty million, six hundred eighteen thousand, forty".