16122049857 has 6 divisors (see below), whose sum is σ = 23287405362. Its totient is φ = 10748033232.

The previous prime is 16122049831. The next prime is 16122049861. The reversal of 16122049857 is 75894022161.

16122049857 is a `hidden beast` number, since 1 + 612 + 20 + 4 + 9 + 8 + 5 + 7 = 666.

16122049857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10210900401 + 5911149456 = 101049^2 + 76884^2 .

It is not a de Polignac number, because 16122049857 - 2¹⁸ = 16121787713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16122049877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 895669428 + ... + 895669445.

It is an arithmetic number, because the mean of its divisors is an integer number (3881234227).

Almost surely, 2^16122049857 is an apocalyptic number.

It is an amenable number.

16122049857 is a deficient number, since it is larger than the sum of its proper divisors (7165355505).

16122049857 is a wasteful number, since it uses less digits than its factorization.

16122049857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791338879 (or 1791338876 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16122049857 in words is "sixteen billion, one hundred twenty-two million, forty-nine thousand, eight hundred fifty-seven".