36437033405821 has 2 divisors, whose sum is σ = 36437033405822. Its totient is φ = 36437033405820.

The previous prime is 36437033405779. The next prime is 36437033405849. The reversal of 36437033405821 is 12850433073463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28363826092900 + 8073207312921 = 5325770^2 + 2841339^2 .

It is a cyclic number.

It is not a de Polignac number, because 36437033405821 - 2¹¹ = 36437033403773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36437033405221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18218516702910 + 18218516702911.

It is an arithmetic number, because the mean of its divisors is an integer number (18218516702911).

Almost surely, 2^{36437033405821} is an apocalyptic number.

It is an amenable number.

36437033405821 is a deficient number, since it is larger than the sum of its proper divisors (1).

36437033405821 is an equidigital number, since it uses as much as digits as its factorization.

36437033405821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 49.

The spelling of 36437033405821 in words is "thirty-six trillion, four hundred thirty-seven billion, thirty-three million, four hundred five thousand, eight hundred twenty-one".