16440614243 has 4 divisors (see below), whose sum is σ = 16446030720. Its totient is φ = 16435197768.

The previous prime is 16440614221. The next prime is 16440614251. The reversal of 16440614243 is 34241604461.

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 16440614243 - 2²⁸ = 16172178787 is a prime.

It is a super-3 number, since 3×16440614243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16440619243) 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, 2703683 + ... + 2709756.

It is an arithmetic number, because the mean of its divisors is an integer number (4111507680).

Almost surely, 2^16440614243 is an apocalyptic number.

16440614243 is a deficient number, since it is larger than the sum of its proper divisors (5416477).

16440614243 is an equidigital number, since it uses as much as digits as its factorization.

16440614243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416476.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 16440614243 in words is "sixteen billion, four hundred forty million, six hundred fourteen thousand, two hundred forty-three".