20126334254161 has 16 divisors (see below), whose sum is σ = 21702752487360. Its totient is φ = 18601647563520.

The previous prime is 20126334254149. The next prime is 20126334254249. The reversal of 20126334254161 is 16145243362102.

It is a cyclic number.

It is not a de Polignac number, because 20126334254161 - 2⁵ = 20126334254129 is a prime.

It is a super-2 number, since 2×20126334254161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20126334254101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46068430 + ... + 46503256.

It is an arithmetic number, because the mean of its divisors is an integer number (1356422030460).

Almost surely, 2^{20126334254161} is an apocalyptic number.

It is an amenable number.

20126334254161 is a deficient number, since it is larger than the sum of its proper divisors (1576418233199).

20126334254161 is a wasteful number, since it uses less digits than its factorization.

20126334254161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494304.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20126334254161 in words is "twenty trillion, one hundred twenty-six billion, three hundred thirty-four million, two hundred fifty-four thousand, one hundred sixty-one".