16699294458 has 288 divisors, whose sum is σ = 47564375040. Its totient is φ = 4139942400.

The previous prime is 16699294441. The next prime is 16699294459. The reversal of 16699294458 is 85449299661.

16699294458 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 92 + 94 + 458 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (33592320) is a multiple of the sum of its prime divisors (540).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16699294395 and 16699294404.

It is not an unprimeable number, because it can be changed into a prime (16699294459) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 42063516 + ... + 42063912.

It is an arithmetic number, because the mean of its divisors is an integer number (165154080).

Almost surely, 2^16699294458 is an apocalyptic number.

16699294458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16699294458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23782187520).

16699294458 is an abundant number, since it is smaller than the sum of its proper divisors (30865080582).

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

16699294458 is a wasteful number, since it uses less digits than its factorization.

16699294458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 540 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 16699294458 in words is "sixteen billion, six hundred ninety-nine million, two hundred ninety-four thousand, four hundred fifty-eight".