20011946227399 has 32 divisors (see below), whose sum is σ = 23639191041024. Its totient is φ = 16586331740160.

The previous prime is 20011946227393. The next prime is 20011946227411. The reversal of 20011946227399 is 99372264911002.

It is a happy number.

It is not a de Polignac number, because 20011946227399 - 2⁵ = 20011946227367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011946227393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72378792 + ... + 72654754.

It is an arithmetic number, because the mean of its divisors is an integer number (738724720032).

Almost surely, 2^{20011946227399} is an apocalyptic number.

20011946227399 is a deficient number, since it is larger than the sum of its proper divisors (3627244813625).

20011946227399 is a wasteful number, since it uses less digits than its factorization.

20011946227399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278847.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 20011946227399 in words is "twenty trillion, eleven billion, nine hundred forty-six million, two hundred twenty-seven thousand, three hundred ninety-nine".