16993899290 has 16 divisors (see below), whose sum is σ = 30602039112. Its totient is φ = 6794666304.

The previous prime is 16993899287. The next prime is 16993899317. The reversal of 16993899290 is 9299839961.

It can be written as a sum of positive squares in 4 ways, for example, as 15871716289 + 1122183001 = 125983^2 + 33499^2 .

It is a super-2 number, since 2×16993899290² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336929 + ... + 384068.

Almost surely, 2^16993899290 is an apocalyptic number.

16993899290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16993899290 is a deficient number, since it is larger than the sum of its proper divisors (13608139822).

16993899290 is a wasteful number, since it uses less digits than its factorization.

16993899290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723361.

The product of its (nonzero) digits is 17006112, while the sum is 65.

The spelling of 16993899290 in words is "sixteen billion, nine hundred ninety-three million, eight hundred ninety-nine thousand, two hundred ninety".