37236918066421 has 2 divisors, whose sum is σ = 37236918066422. Its totient is φ = 37236918066420.

The previous prime is 37236918066367. The next prime is 37236918066457. The reversal of 37236918066421 is 12466081963273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36336952784196 + 899965282225 = 6028014^2 + 948665^2 .

It is an emirp because it is prime and its reverse (12466081963273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37236918066421 - 2²⁵ = 37236884511989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37236918060421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18618459033210 + 18618459033211.

It is an arithmetic number, because the mean of its divisors is an integer number (18618459033211).

Almost surely, 2^{37236918066421} is an apocalyptic number.

It is an amenable number.

37236918066421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37236918066421 is an equidigital number, since it uses as much as digits as its factorization.

37236918066421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 37236918066421 in words is "thirty-seven trillion, two hundred thirty-six billion, nine hundred eighteen million, sixty-six thousand, four hundred twenty-one".