14573823421 has 2 divisors, whose sum is σ = 14573823422. Its totient is φ = 14573823420.

The previous prime is 14573823419. The next prime is 14573823487. The reversal of 14573823421 is 12432837541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13797086521 + 776736900 = 117461^2 + 27870^2 .

It is a cyclic number.

It is not a de Polignac number, because 14573823421 - 2¹ = 14573823419 is a prime.

Together with 14573823419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14573823221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7286911710 + 7286911711.

It is an arithmetic number, because the mean of its divisors is an integer number (7286911711).

Almost surely, 2^14573823421 is an apocalyptic number.

It is an amenable number.

14573823421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14573823421 is an equidigital number, since it uses as much as digits as its factorization.

14573823421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The spelling of 14573823421 in words is "fourteen billion, five hundred seventy-three million, eight hundred twenty-three thousand, four hundred twenty-one".