16299519021 has 12 divisors (see below), whose sum is σ = 23635362972. Its totient is φ = 10824062976.

The previous prime is 16299518993. The next prime is 16299519079. The reversal of 16299519021 is 12091599261.

16299519021 is a `hidden beast` number, since 1 + 629 + 9 + 5 + 19 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14571869796 + 1727649225 = 120714^2 + 41565^2 .

It is not a de Polignac number, because 16299519021 - 2⁶ = 16299518957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16299519121) 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 11 ways as a sum of consecutive naturals, for example, 3521146 + ... + 3525771.

It is an arithmetic number, because the mean of its divisors is an integer number (1969613581).

Almost surely, 2^16299519021 is an apocalyptic number.

It is an amenable number.

16299519021 is a deficient number, since it is larger than the sum of its proper divisors (7335843951).

16299519021 is a wasteful number, since it uses less digits than its factorization.

16299519021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7047180 (or 7047177 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 16299519021 in words is "sixteen billion, two hundred ninety-nine million, five hundred nineteen thousand, twenty-one".