16499889587 has 2 divisors, whose sum is σ = 16499889588. Its totient is φ = 16499889586.

The previous prime is 16499889583. The next prime is 16499889599. The reversal of 16499889587 is 78598899461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16499889587 - 2² = 16499889583 is a prime.

It is not a weakly prime, because it can be changed into another prime (16499889583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8249944793 + 8249944794.

It is an arithmetic number, because the mean of its divisors is an integer number (8249944794).

Almost surely, 2^16499889587 is an apocalyptic number.

16499889587 is a deficient number, since it is larger than the sum of its proper divisors (1).

16499889587 is an equidigital number, since it uses as much as digits as its factorization.

16499889587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313528320, while the sum is 74.

The spelling of 16499889587 in words is "sixteen billion, four hundred ninety-nine million, eight hundred eighty-nine thousand, five hundred eighty-seven".