16514440423 has 4 divisors (see below), whose sum is σ = 17784782008. Its totient is φ = 15244098840.

The previous prime is 16514440361. The next prime is 16514440447. The reversal of 16514440423 is 32404441561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16514440423 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 (16514446423) 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, 635170773 + ... + 635170798.

It is an arithmetic number, because the mean of its divisors is an integer number (4446195502).

Almost surely, 2^16514440423 is an apocalyptic number.

16514440423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16514440423 is a deficient number, since it is larger than the sum of its proper divisors (1270341585).

16514440423 is a wasteful number, since it uses less digits than its factorization.

16514440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270341584.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 16514440423 its reverse (32404441561), we get a palindrome (48918881984).

The spelling of 16514440423 in words is "sixteen billion, five hundred fourteen million, four hundred forty thousand, four hundred twenty-three".