36163654151621 has 4 divisors (see below), whose sum is σ = 36235550084832. Its totient is φ = 36091758218412.

The previous prime is 36163654151593. The next prime is 36163654151629. The reversal of 36163654151621 is 12615145636163.

It is a happy number.

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-36163654151621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36163654151621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36163654151629) 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, 35947965851 + ... + 35947966856.

It is an arithmetic number, because the mean of its divisors is an integer number (9058887521208).

Almost surely, 2^{36163654151621} is an apocalyptic number.

It is an amenable number.

36163654151621 is a deficient number, since it is larger than the sum of its proper divisors (71895933211).

36163654151621 is an equidigital number, since it uses as much as digits as its factorization.

36163654151621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71895933210.

The product of its digits is 2332800, while the sum is 50.

Adding to 36163654151621 its reverse (12615145636163), we get a palindrome (48778799787784).

The spelling of 36163654151621 in words is "thirty-six trillion, one hundred sixty-three billion, six hundred fifty-four million, one hundred fifty-one thousand, six hundred twenty-one".