16994961587 has 2 divisors, whose sum is σ = 16994961588. Its totient is φ = 16994961586.

The previous prime is 16994961539. The next prime is 16994961601. The reversal of 16994961587 is 78516949961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16994961587 - 2¹² = 16994957491 is a prime.

It is not a weakly prime, because it can be changed into another prime (16994961527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497480793 + 8497480794.

It is an arithmetic number, because the mean of its divisors is an integer number (8497480794).

Almost surely, 2^16994961587 is an apocalyptic number.

16994961587 is a deficient number, since it is larger than the sum of its proper divisors (1).

16994961587 is an equidigital number, since it uses as much as digits as its factorization.

16994961587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 65.

The spelling of 16994961587 in words is "sixteen billion, nine hundred ninety-four million, nine hundred sixty-one thousand, five hundred eighty-seven".