20426393353 has 4 divisors (see below), whose sum is σ = 20443602960. Its totient is φ = 20409183748.

The previous prime is 20426393347. The next prime is 20426393387. The reversal of 20426393353 is 35339362402.

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 20426393353 - 2⁵ = 20426393321 is a prime.

It is a super-2 number, since 2×20426393353² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20426393453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8603023 + ... + 8605396.

It is an arithmetic number, because the mean of its divisors is an integer number (5110900740).

Almost surely, 2^20426393353 is an apocalyptic number.

It is an amenable number.

20426393353 is a deficient number, since it is larger than the sum of its proper divisors (17209607).

20426393353 is a wasteful number, since it uses less digits than its factorization.

20426393353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17209606.

The product of its (nonzero) digits is 349920, while the sum is 40.

The spelling of 20426393353 in words is "twenty billion, four hundred twenty-six million, three hundred ninety-three thousand, three hundred fifty-three".