16699294457 has 4 divisors (see below), whose sum is σ = 16699937616. Its totient is φ = 16698651300.

The previous prime is 16699294441. The next prime is 16699294459. The reversal of 16699294457 is 75449299661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16699294457 - 2⁴ = 16699294441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16699294457.

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 3 ways as a sum of consecutive naturals, for example, 280919 + ... + 335132.

It is an arithmetic number, because the mean of its divisors is an integer number (4174984404).

Almost surely, 2^16699294457 is an apocalyptic number.

It is an amenable number.

16699294457 is a deficient number, since it is larger than the sum of its proper divisors (643159).

16699294457 is an equidigital number, since it uses as much as digits as its factorization.

16699294457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643158.

The product of its digits is 29393280, while the sum is 62.

The spelling of 16699294457 in words is "sixteen billion, six hundred ninety-nine million, two hundred ninety-four thousand, four hundred fifty-seven".