20113643400423 has 16 divisors (see below), whose sum is σ = 28666740969216. Its totient is φ = 12513259943360.

The previous prime is 20113643400419. The next prime is 20113643400437. The reversal of 20113643400423 is 32400434631102.

It is a cyclic number.

It is not a de Polignac number, because 20113643400423 - 2² = 20113643400419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113643400623) 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, 3554900565 + ... + 3554906222.

It is an arithmetic number, because the mean of its divisors is an integer number (1791671310576).

Almost surely, 2^{20113643400423} is an apocalyptic number.

20113643400423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20113643400423 is a deficient number, since it is larger than the sum of its proper divisors (8553097568793).

20113643400423 is a wasteful number, since it uses less digits than its factorization.

20113643400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109806854.

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 20113643400423 in words is "twenty trillion, one hundred thirteen billion, six hundred forty-three million, four hundred thousand, four hundred twenty-three".