3656635163244 has 384 divisors, whose sum is σ = 11469439027200. Its totient is φ = 984165396480.

The previous prime is 3656635163221. The next prime is 3656635163249. The reversal of 3656635163244 is 4423615366563.

3656635163244 is a `hidden beast` number, since 3 + 6 + 56 + 6 + 3 + 516 + 32 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3656635163249) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3539820552 + ... + 3539821584.

It is an arithmetic number, because the mean of its divisors is an integer number (29868330800).

Almost surely, 2^{3656635163244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3656635163244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5734719513600).

3656635163244 is an abundant number, since it is smaller than the sum of its proper divisors (7812803863956).

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

3656635163244 is a wasteful number, since it uses less digits than its factorization.

3656635163244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2222 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 54.

The spelling of 3656635163244 in words is "three trillion, six hundred fifty-six billion, six hundred thirty-five million, one hundred sixty-three thousand, two hundred forty-four".