16405924823 has 2 divisors, whose sum is σ = 16405924824. Its totient is φ = 16405924822.

The previous prime is 16405924781. The next prime is 16405924849. The reversal of 16405924823 is 32842950461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16405924823 - 2²⁸ = 16137489367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16405924853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202962411 + 8202962412.

It is an arithmetic number, because the mean of its divisors is an integer number (8202962412).

Almost surely, 2^16405924823 is an apocalyptic number.

16405924823 is a deficient number, since it is larger than the sum of its proper divisors (1).

16405924823 is an equidigital number, since it uses as much as digits as its factorization.

16405924823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 16405924823 in words is "sixteen billion, four hundred five million, nine hundred twenty-four thousand, eight hundred twenty-three".