16899195851 has 4 divisors (see below), whose sum is σ = 17355930912. Its totient is φ = 16442460792.

The previous prime is 16899195829. The next prime is 16899195877. The reversal of 16899195851 is 15859199861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16899195851 - 2²² = 16895001547 is a prime.

It is a super-2 number, since 2×16899195851² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16899195751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228367475 + ... + 228367548.

It is an arithmetic number, because the mean of its divisors is an integer number (4338982728).

Almost surely, 2^16899195851 is an apocalyptic number.

16899195851 is a deficient number, since it is larger than the sum of its proper divisors (456735061).

16899195851 is an equidigital number, since it uses as much as digits as its factorization.

16899195851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456735060.

The product of its digits is 6998400, while the sum is 62.

The spelling of 16899195851 in words is "sixteen billion, eight hundred ninety-nine million, one hundred ninety-five thousand, eight hundred fifty-one".