16001881447 has 2 divisors, whose sum is σ = 16001881448. Its totient is φ = 16001881446.

The previous prime is 16001881421. The next prime is 16001881463. The reversal of 16001881447 is 74418810061.

It is a strong prime.

It is an emirp because it is prime and its reverse (74418810061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16001881447 - 2¹⁵ = 16001848679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16001981447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000940723 + 8000940724.

It is an arithmetic number, because the mean of its divisors is an integer number (8000940724).

Almost surely, 2^16001881447 is an apocalyptic number.

16001881447 is a deficient number, since it is larger than the sum of its proper divisors (1).

16001881447 is an equidigital number, since it uses as much as digits as its factorization.

16001881447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 16001881447 in words is "sixteen billion, one million, eight hundred eighty-one thousand, four hundred forty-seven".