20136426444441 has 6 divisors (see below), whose sum is σ = 29085949308650. Its totient is φ = 13424284296288.

The previous prime is 20136426444391. The next prime is 20136426444461. The reversal of 20136426444441 is 14444462463102.

20136426444441 is a `hidden beast` number, since 20 + 1 + 364 + 264 + 4 + 4 + 4 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12933402460416 + 7203023984025 = 3596304^2 + 2683845^2 .

It is not a de Polignac number, because 20136426444441 - 2⁹ = 20136426443929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20136426444461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118690358016 + ... + 1118690358033.

Almost surely, 2^{20136426444441} is an apocalyptic number.

It is an amenable number.

20136426444441 is a deficient number, since it is larger than the sum of its proper divisors (8949522864209).

20136426444441 is a wasteful number, since it uses less digits than its factorization.

20136426444441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237380716055 (or 2237380716052 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 45.

The spelling of 20136426444441 in words is "twenty trillion, one hundred thirty-six billion, four hundred twenty-six million, four hundred forty-four thousand, four hundred forty-one".