3736740733421 has 2 divisors, whose sum is σ = 3736740733422. Its totient is φ = 3736740733420.

The previous prime is 3736740733289. The next prime is 3736740733507. The reversal of 3736740733421 is 1243370476373.

3736740733421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3551664391396 + 185076342025 = 1884586^2 + 430205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3736740733421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3736740733421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3736740783421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1868370366710 + 1868370366711.

It is an arithmetic number, because the mean of its divisors is an integer number (1868370366711).

Almost surely, 2^{3736740733421} is an apocalyptic number.

It is an amenable number.

3736740733421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3736740733421 is an equidigital number, since it uses as much as digits as its factorization.

3736740733421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 50.

The spelling of 3736740733421 in words is "three trillion, seven hundred thirty-six billion, seven hundred forty million, seven hundred thirty-three thousand, four hundred twenty-one".