20137344705773 has 2 divisors, whose sum is σ = 20137344705774. Its totient is φ = 20137344705772.

The previous prime is 20137344705763. The next prime is 20137344705811. The reversal of 20137344705773 is 37750744373102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20102695861609 + 34648844164 = 4483603^2 + 186142^2 .

It is a cyclic number.

It is not a de Polignac number, because 20137344705773 - 2²² = 20137340511469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20137344705733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10068672352886 + 10068672352887.

It is an arithmetic number, because the mean of its divisors is an integer number (10068672352887).

Almost surely, 2^{20137344705773} is an apocalyptic number.

It is an amenable number.

20137344705773 is a deficient number, since it is larger than the sum of its proper divisors (1).

20137344705773 is an equidigital number, since it uses as much as digits as its factorization.

20137344705773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10372320, while the sum is 53.

The spelling of 20137344705773 in words is "twenty trillion, one hundred thirty-seven billion, three hundred forty-four million, seven hundred five thousand, seven hundred seventy-three".