3636986842872 has 24 divisors (see below), whose sum is σ = 9850172699640. Its totient is φ = 1212328947600.

The previous prime is 3636986842843. The next prime is 3636986842967. The reversal of 3636986842872 is 2782486896363.

3636986842872 is a `hidden beast` number, since 3 + 63 + 69 + 86 + 8 + 428 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 50513706151 = 3636986842872 / (3 + 6 + 3 + 6 + 9 + 8 + 6 + 8 + 4 + 2 + 8 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 3636986842872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25256853004 + ... + 25256853147.

It is an arithmetic number, because the mean of its divisors is an integer number (410423862485).

Almost surely, 2^{3636986842872} is an apocalyptic number.

It is an amenable number.

3636986842872 is an abundant number, since it is smaller than the sum of its proper divisors (6213185856768).

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

3636986842872 is a wasteful number, since it uses less digits than its factorization.

3636986842872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50513706163 (or 50513706156 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 72.

The spelling of 3636986842872 in words is "three trillion, six hundred thirty-six billion, nine hundred eighty-six million, eight hundred forty-two thousand, eight hundred seventy-two".