36278621184221 has 16 divisors (see below), whose sum is σ = 41126300073600. Its totient is φ = 31724864906688.

The previous prime is 36278621184089. The next prime is 36278621184271. The reversal of 36278621184221 is 12248112687263.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 36278621184221 - 2¹⁰ = 36278621183197 is a prime.

It is a super-2 number, since 2×36278621184221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36278621184271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12787640 + ... + 15364926.

It is an arithmetic number, because the mean of its divisors is an integer number (2570393754600).

Almost surely, 2^{36278621184221} is an apocalyptic number.

It is an amenable number.

36278621184221 is a deficient number, since it is larger than the sum of its proper divisors (4847678889379).

36278621184221 is a wasteful number, since it uses less digits than its factorization.

36278621184221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634308.

The product of its digits is 3096576, while the sum is 53.

The spelling of 36278621184221 in words is "thirty-six trillion, two hundred seventy-eight billion, six hundred twenty-one million, one hundred eighty-four thousand, two hundred twenty-one".