36221765651 has 2 divisors, whose sum is σ = 36221765652. Its totient is φ = 36221765650.

The previous prime is 36221765641. The next prime is 36221765653. The reversal of 36221765651 is 15656712263.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36221765651 is a prime.

Together with 36221765653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36221765653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18110882825 + 18110882826.

It is an arithmetic number, because the mean of its divisors is an integer number (18110882826).

Almost surely, 2^36221765651 is an apocalyptic number.

36221765651 is a deficient number, since it is larger than the sum of its proper divisors (1).

36221765651 is an equidigital number, since it uses as much as digits as its factorization.

36221765651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The spelling of 36221765651 in words is "thirty-six billion, two hundred twenty-one million, seven hundred sixty-five thousand, six hundred fifty-one".