16381244623 has 2 divisors, whose sum is σ = 16381244624. Its totient is φ = 16381244622.

The previous prime is 16381244599. The next prime is 16381244647. The reversal of 16381244623 is 32644218361.

It is a balanced prime because it is at equal distance from previous prime (16381244599) and next prime (16381244647).

It is an emirp because it is prime and its reverse (32644218361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16381244623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16381244653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190622311 + 8190622312.

It is an arithmetic number, because the mean of its divisors is an integer number (8190622312).

Almost surely, 2^16381244623 is an apocalyptic number.

16381244623 is a deficient number, since it is larger than the sum of its proper divisors (1).

16381244623 is an equidigital number, since it uses as much as digits as its factorization.

16381244623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The spelling of 16381244623 in words is "sixteen billion, three hundred eighty-one million, two hundred forty-four thousand, six hundred twenty-three".