21013440033037 has 2 divisors, whose sum is σ = 21013440033038. Its totient is φ = 21013440033036.

The previous prime is 21013440032939. The next prime is 21013440033163. The reversal of 21013440033037 is 73033004431012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18525268201801 + 2488171831236 = 4304099^2 + 1577394^2 .

It is a cyclic number.

It is not a de Polignac number, because 21013440033037 - 2¹⁵ = 21013440000269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21013440033437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506720016518 + 10506720016519.

It is an arithmetic number, because the mean of its divisors is an integer number (10506720016519).

Almost surely, 2^{21013440033037} is an apocalyptic number.

It is an amenable number.

21013440033037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013440033037 is an equidigital number, since it uses as much as digits as its factorization.

21013440033037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

Adding to 21013440033037 its reverse (73033004431012), we get a palindrome (94046444464049).

The spelling of 21013440033037 in words is "twenty-one trillion, thirteen billion, four hundred forty million, thirty-three thousand, thirty-seven".