16881639371 has 2 divisors, whose sum is σ = 16881639372. Its totient is φ = 16881639370.

The previous prime is 16881639293. The next prime is 16881639391. The reversal of 16881639371 is 17393618861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16881639371 is a prime.

It is not a weakly prime, because it can be changed into another prime (16881639391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8440819685 + 8440819686.

It is an arithmetic number, because the mean of its divisors is an integer number (8440819686).

Almost surely, 2^16881639371 is an apocalyptic number.

16881639371 is a deficient number, since it is larger than the sum of its proper divisors (1).

16881639371 is an equidigital number, since it uses as much as digits as its factorization.

16881639371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The spelling of 16881639371 in words is "sixteen billion, eight hundred eighty-one million, six hundred thirty-nine thousand, three hundred seventy-one".