36743556121 has 2 divisors, whose sum is σ = 36743556122. Its totient is φ = 36743556120.

The previous prime is 36743556103. The next prime is 36743556131. The reversal of 36743556121 is 12165534763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32110848025 + 4632708096 = 179195^2 + 68064^2 .

It is an emirp because it is prime and its reverse (12165534763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36743556121 - 2²⁷ = 36609338393 is a prime.

It is not a weakly prime, because it can be changed into another prime (36743556131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18371778060 + 18371778061.

It is an arithmetic number, because the mean of its divisors is an integer number (18371778061).

Almost surely, 2^36743556121 is an apocalyptic number.

It is an amenable number.

36743556121 is a deficient number, since it is larger than the sum of its proper divisors (1).

36743556121 is an equidigital number, since it uses as much as digits as its factorization.

36743556121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The spelling of 36743556121 in words is "thirty-six billion, seven hundred forty-three million, five hundred fifty-six thousand, one hundred twenty-one".