20204523423 has 12 divisors (see below), whose sum is σ = 33353499088. Its totient is φ = 11545441920.

The previous prime is 20204523421. The next prime is 20204523433. The reversal of 20204523423 is 32432540202.

It is a happy number.

20204523423 is a `hidden beast` number, since 202 + 0 + 452 + 3 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 20204523423 - 2¹ = 20204523421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204523421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160353298 + ... + 160353423.

Almost surely, 2^20204523423 is an apocalyptic number.

20204523423 is a deficient number, since it is larger than the sum of its proper divisors (13148975665).

20204523423 is a wasteful number, since it uses less digits than its factorization.

20204523423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320706734 (or 320706731 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The spelling of 20204523423 in words is "twenty billion, two hundred four million, five hundred twenty-three thousand, four hundred twenty-three".