16381229743 has 4 divisors (see below), whose sum is σ = 16823965720. Its totient is φ = 15938493768.

The previous prime is 16381229737. The next prime is 16381229759. The reversal of 16381229743 is 34792218361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34792218361 = 23293 ⋅1493677.

It is a cyclic number.

It is not a de Polignac number, because 16381229743 - 2³³ = 7791295151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16381229693 and 16381229702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16381229723) 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, 221367933 + ... + 221368006.

It is an arithmetic number, because the mean of its divisors is an integer number (4205991430).

Almost surely, 2^16381229743 is an apocalyptic number.

16381229743 is a deficient number, since it is larger than the sum of its proper divisors (442735977).

16381229743 is an equidigital number, since it uses as much as digits as its factorization.

16381229743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442735976.

The product of its digits is 435456, while the sum is 46.

The spelling of 16381229743 in words is "sixteen billion, three hundred eighty-one million, two hundred twenty-nine thousand, seven hundred forty-three".