20126338769089 has 4 divisors (see below), whose sum is σ = 23001530021824. Its totient is φ = 17251147516356.

The previous prime is 20126338769063. The next prime is 20126338769113. The reversal of 20126338769089 is 98096783362102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20126338769089 - 2²¹ = 20126336671937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20126338769089.

It is not an unprimeable number, because it can be changed into a prime (20126338769489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437595626357 + ... + 1437595626370.

It is an arithmetic number, because the mean of its divisors is an integer number (5750382505456).

Almost surely, 2^{20126338769089} is an apocalyptic number.

It is an amenable number.

20126338769089 is a deficient number, since it is larger than the sum of its proper divisors (2875191252735).

20126338769089 is an equidigital number, since it uses as much as digits as its factorization.

20126338769089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875191252734.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 20126338769089 in words is "twenty trillion, one hundred twenty-six billion, three hundred thirty-eight million, seven hundred sixty-nine thousand, eighty-nine".