16699235317880 has 32 divisors (see below), whose sum is σ = 37577634544800. Its totient is φ = 6678919890816.

The previous prime is 16699235317819. The next prime is 16699235317889. The reversal of 16699235317880 is 8871353299661.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16699235317880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16699235317889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23845412 + ... + 24535731.

It is an arithmetic number, because the mean of its divisors is an integer number (1174301079525).

Almost surely, 2^{16699235317880} is an apocalyptic number.

16699235317880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16699235317880 is an abundant number, since it is smaller than the sum of its proper divisors (20878399226920).

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

16699235317880 is a wasteful number, since it uses less digits than its factorization.

16699235317880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48389783 (or 48389779 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 68.

The spelling of 16699235317880 in words is "sixteen trillion, six hundred ninety-nine billion, two hundred thirty-five million, three hundred seventeen thousand, eight hundred eighty".