36505673441021 has 2 divisors, whose sum is σ = 36505673441022. Its totient is φ = 36505673441020.

The previous prime is 36505673440993. The next prime is 36505673441033. The reversal of 36505673441021 is 12014437650563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35205959438521 + 1299714002500 = 5933461^2 + 1140050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36505673441021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36505673431021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18252836720510 + 18252836720511.

It is an arithmetic number, because the mean of its divisors is an integer number (18252836720511).

Almost surely, 2^{36505673441021} is an apocalyptic number.

It is an amenable number.

36505673441021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36505673441021 is an equidigital number, since it uses as much as digits as its factorization.

36505673441021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 36505673441021 in words is "thirty-six trillion, five hundred five billion, six hundred seventy-three million, four hundred forty-one thousand, twenty-one".