36231416621 has 4 divisors (see below), whose sum is σ = 36254364000. Its totient is φ = 36208469244.

The previous prime is 36231416561. The next prime is 36231416657. The reversal of 36231416621 is 12661413263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36231416621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36231412621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11471321 + ... + 11474478.

It is an arithmetic number, because the mean of its divisors is an integer number (9063591000).

Almost surely, 2^36231416621 is an apocalyptic number.

It is an amenable number.

36231416621 is a deficient number, since it is larger than the sum of its proper divisors (22947379).

36231416621 is a wasteful number, since it uses less digits than its factorization.

36231416621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22947378.

The product of its digits is 31104, while the sum is 35.

Adding to 36231416621 its reverse (12661413263), we get a palindrome (48892829884).

The spelling of 36231416621 in words is "thirty-six billion, two hundred thirty-one million, four hundred sixteen thousand, six hundred twenty-one".