20434632133 has 4 divisors (see below), whose sum is σ = 20463053760. Its totient is φ = 20406210508.

The previous prime is 20434632131. The next prime is 20434632137. The reversal of 20434632133 is 33123643402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20434632133 - 2¹ = 20434632131 is a prime.

It is a super-2 number, since 2×20434632133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20434632095 and 20434632104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434632131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14209735 + ... + 14211172.

It is an arithmetic number, because the mean of its divisors is an integer number (5115763440).

Almost surely, 2^20434632133 is an apocalyptic number.

It is an amenable number.

20434632133 is a deficient number, since it is larger than the sum of its proper divisors (28421627).

20434632133 is an equidigital number, since it uses as much as digits as its factorization.

20434632133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28421626.

The product of its (nonzero) digits is 31104, while the sum is 31.

The spelling of 20434632133 in words is "twenty billion, four hundred thirty-four million, six hundred thirty-two thousand, one hundred thirty-three".