16994275049 has 4 divisors (see below), whose sum is σ = 17162535300. Its totient is φ = 16826014800.

The previous prime is 16994275037. The next prime is 16994275061. The reversal of 16994275049 is 94057249961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94057249961 = 7949 ⋅11832589.

It is an interprime number because it is at equal distance from previous prime (16994275037) and next prime (16994275061).

It can be written as a sum of positive squares in 2 ways, for example, as 11958953449 + 5035321600 = 109357^2 + 70960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16994275049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16994274985 and 16994275003.

It is not an unprimeable number, because it can be changed into a prime (16994275009) 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, 84129974 + ... + 84130175.

It is an arithmetic number, because the mean of its divisors is an integer number (4290633825).

Almost surely, 2^16994275049 is an apocalyptic number.

It is an amenable number.

16994275049 is a deficient number, since it is larger than the sum of its proper divisors (168260251).

16994275049 is a wasteful number, since it uses less digits than its factorization.

16994275049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168260250.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 16994275049 in words is "sixteen billion, nine hundred ninety-four million, two hundred seventy-five thousand, forty-nine".