20623643133 has 16 divisors (see below), whose sum is σ = 27678604800. Its totient is φ = 13659151680.

The previous prime is 20623643129. The next prime is 20623643153. The reversal of 20623643133 is 33134632602.

It is a happy number.

It is not a de Polignac number, because 20623643133 - 2² = 20623643129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20623643094 and 20623643103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623643153) 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, 284148 + ... + 349266.

It is an arithmetic number, because the mean of its divisors is an integer number (1729912800).

Almost surely, 2^20623643133 is an apocalyptic number.

It is an amenable number.

20623643133 is a deficient number, since it is larger than the sum of its proper divisors (7054961667).

20623643133 is a wasteful number, since it uses less digits than its factorization.

20623643133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65812.

The product of its (nonzero) digits is 46656, while the sum is 33.

The spelling of 20623643133 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, one hundred thirty-three".