20450035423 has 4 divisors (see below), whose sum is σ = 20597158120. Its totient is φ = 20302912728.

The previous prime is 20450035387. The next prime is 20450035477. The reversal of 20450035423 is 32453005402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20450035423 - 2⁹ = 20450034911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20450035391 and 20450035400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450035493) 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, 73561140 + ... + 73561417.

It is an arithmetic number, because the mean of its divisors is an integer number (5149289530).

Almost surely, 2^20450035423 is an apocalyptic number.

20450035423 is a deficient number, since it is larger than the sum of its proper divisors (147122697).

20450035423 is a wasteful number, since it uses less digits than its factorization.

20450035423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147122696.

The product of its (nonzero) digits is 14400, while the sum is 28.

The spelling of 20450035423 in words is "twenty billion, four hundred fifty million, thirty-five thousand, four hundred twenty-three".