20228165436233 has 8 divisors (see below), whose sum is σ = 20963256959880. Its totient is φ = 19495578484480.

The previous prime is 20228165436217. The next prime is 20228165436257. The reversal of 20228165436233 is 33263456182202.

It can be written as a sum of positive squares in 4 ways, for example, as 472522884409 + 19755642551824 = 687403^2 + 4444732^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20228165436233 - 2⁴ = 20228165436217 is a prime.

It is a super-2 number, since 2×20228165436233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20228165436203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626126528 + ... + 626158833.

It is an arithmetic number, because the mean of its divisors is an integer number (2620407119985).

Almost surely, 2^{20228165436233} is an apocalyptic number.

It is an amenable number.

20228165436233 is a deficient number, since it is larger than the sum of its proper divisors (735091523647).

20228165436233 is a wasteful number, since it uses less digits than its factorization.

20228165436233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252285947.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 20228165436233 in words is "twenty trillion, two hundred twenty-eight billion, one hundred sixty-five million, four hundred thirty-six thousand, two hundred thirty-three".