16691770368 has 396 divisors, whose sum is σ = 59684428128. Its totient is φ = 4399349760.

The previous prime is 16691770343. The next prime is 16691770429. The reversal of 16691770368 is 86307719661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10901763 + ... + 10903293.

Almost surely, 2^16691770368 is an apocalyptic number.

16691770368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16691770368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29842214064).

16691770368 is an abundant number, since it is smaller than the sum of its proper divisors (42992657760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16691770368 is a wasteful number, since it uses less digits than its factorization.

16691770368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 16691770368 in words is "sixteen billion, six hundred ninety-one million, seven hundred seventy thousand, three hundred sixty-eight".