20895836767423 has 4 divisors (see below), whose sum is σ = 21405491322768. Its totient is φ = 20386182212080.

The previous prime is 20895836767411. The next prime is 20895836767427. The reversal of 20895836767423 is 32476763859802.

It is a happy number.

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 20895836767423 - 2³³ = 20887246832831 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 (20895836767427) 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, 254827277611 + ... + 254827277692.

It is an arithmetic number, because the mean of its divisors is an integer number (5351372830692).

Almost surely, 2^{20895836767423} is an apocalyptic number.

20895836767423 is a deficient number, since it is larger than the sum of its proper divisors (509654555345).

20895836767423 is an equidigital number, since it uses as much as digits as its factorization.

20895836767423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509654555344.

The product of its (nonzero) digits is 731566080, while the sum is 70.

The spelling of 20895836767423 in words is "twenty trillion, eight hundred ninety-five billion, eight hundred thirty-six million, seven hundred sixty-seven thousand, four hundred twenty-three".