20893689373 has 2 divisors, whose sum is σ = 20893689374. Its totient is φ = 20893689372.

The previous prime is 20893689337. The next prime is 20893689413. The reversal of 20893689373 is 37398639802.

Together with previous prime (20893689337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16553910244 + 4339779129 = 128662^2 + 65877^2 .

It is a cyclic number.

It is not a de Polignac number, because 20893689373 - 2¹³ = 20893681181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20893684373) 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, 10446844686 + 10446844687.

It is an arithmetic number, because the mean of its divisors is an integer number (10446844687).

Almost surely, 2^20893689373 is an apocalyptic number.

It is an amenable number.

20893689373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20893689373 is an equidigital number, since it uses as much as digits as its factorization.

20893689373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 20893689373 in words is "twenty billion, eight hundred ninety-three million, six hundred eighty-nine thousand, three hundred seventy-three".