20306554423 has 4 divisors (see below), whose sum is σ = 20309811280. Its totient is φ = 20303297568.

The previous prime is 20306554369. The next prime is 20306554453. The reversal of 20306554423 is 32445560302.

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 20306554423 - 2¹⁷ = 20306423351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306554453) 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, 1619058 + ... + 1631551.

It is an arithmetic number, because the mean of its divisors is an integer number (5077452820).

Almost surely, 2^20306554423 is an apocalyptic number.

20306554423 is a deficient number, since it is larger than the sum of its proper divisors (3256857).

20306554423 is an equidigital number, since it uses as much as digits as its factorization.

20306554423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256856.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 20306554423 in words is "twenty billion, three hundred six million, five hundred fifty-four thousand, four hundred twenty-three".