16699883491 has 2 divisors, whose sum is σ = 16699883492. Its totient is φ = 16699883490.

The previous prime is 16699883483. The next prime is 16699883561. The reversal of 16699883491 is 19438899661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16699883491 - 2³ = 16699883483 is a prime.

It is a super-2 number, since 2×16699883491² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16699883461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349941745 + 8349941746.

It is an arithmetic number, because the mean of its divisors is an integer number (8349941746).

Almost surely, 2^16699883491 is an apocalyptic number.

16699883491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699883491 is an equidigital number, since it uses as much as digits as its factorization.

16699883491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 64.

The spelling of 16699883491 in words is "sixteen billion, six hundred ninety-nine million, eight hundred eighty-three thousand, four hundred ninety-one".