36561573616212 has 84 divisors (see below), whose sum is σ = 98522956487956. Its totient is φ = 11857807624320.

The previous prime is 36561573616159. The next prime is 36561573616283. The reversal of 36561573616212 is 21261637516563.

36561573616212 is a `hidden beast` number, since 3 + 6 + 5 + 6 + 1 + 5 + 7 + 3 + 6 + 1 + 621 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31916014129476 + 4645559486736 = 5649426^2 + 2155356^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 169328089 + ... + 169543872.

Almost surely, 2^{36561573616212} is an apocalyptic number.

It is an amenable number.

36561573616212 is an abundant number, since it is smaller than the sum of its proper divisors (61961382871744).

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

36561573616212 is a wasteful number, since it uses less digits than its factorization.

36561573616212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338872020 (or 338872003 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 36561573616212 in words is "thirty-six trillion, five hundred sixty-one billion, five hundred seventy-three million, six hundred sixteen thousand, two hundred twelve".