16847140423 has 4 divisors (see below), whose sum is σ = 16979795200. Its totient is φ = 16714485648.

The previous prime is 16847140399. The next prime is 16847140451. The reversal of 16847140423 is 32404174861.

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 16847140423 - 2¹⁷ = 16847009351 is a prime.

It is a super-2 number, since 2×16847140423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16847140523) 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, 66327198 + ... + 66327451.

It is an arithmetic number, because the mean of its divisors is an integer number (4244948800).

Almost surely, 2^16847140423 is an apocalyptic number.

16847140423 is a deficient number, since it is larger than the sum of its proper divisors (132654777).

16847140423 is a wasteful number, since it uses less digits than its factorization.

16847140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132654776.

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

The spelling of 16847140423 in words is "sixteen billion, eight hundred forty-seven million, one hundred forty thousand, four hundred twenty-three".