20900922509743 has 2 divisors, whose sum is σ = 20900922509744. Its totient is φ = 20900922509742.

The previous prime is 20900922509741. The next prime is 20900922509893. The reversal of 20900922509743 is 34790522900902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20900922509743 - 2¹ = 20900922509741 is a prime.

Together with 20900922509741, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20900922509741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10450461254871 + 10450461254872.

It is an arithmetic number, because the mean of its divisors is an integer number (10450461254872).

Almost surely, 2^{20900922509743} is an apocalyptic number.

20900922509743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20900922509743 is an equidigital number, since it uses as much as digits as its factorization.

20900922509743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 20900922509743 in words is "twenty trillion, nine hundred billion, nine hundred twenty-two million, five hundred nine thousand, seven hundred forty-three".