20814674431 has 8 divisors (see below), whose sum is σ = 21188942928. Its totient is φ = 20441472000.

The previous prime is 20814674417. The next prime is 20814674497. The reversal of 20814674431 is 13447641802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20814674431 - 2²⁵ = 20781119999 is a prime.

It is a super-3 number, since 3×20814674431³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20814654431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227065 + ... + 305266.

It is an arithmetic number, because the mean of its divisors is an integer number (2648617866).

Almost surely, 2^20814674431 is an apocalyptic number.

20814674431 is a deficient number, since it is larger than the sum of its proper divisors (374268497).

20814674431 is an equidigital number, since it uses as much as digits as its factorization.

20814674431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533033.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20814674431 in words is "twenty billion, eight hundred fourteen million, six hundred seventy-four thousand, four hundred thirty-one".