16774709749 has 16 divisors (see below), whose sum is σ = 19249401600. Its totient is φ = 14319702144.

The previous prime is 16774709737. The next prime is 16774709753. The reversal of 16774709749 is 94790747761.

It is a cyclic number.

It is not a de Polignac number, because 16774709749 - 2¹¹ = 16774707701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16774709719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149747 + ... + 2157535.

It is an arithmetic number, because the mean of its divisors is an integer number (1203087600).

Almost surely, 2^16774709749 is an apocalyptic number.

It is an amenable number.

16774709749 is a deficient number, since it is larger than the sum of its proper divisors (2474691851).

16774709749 is an equidigital number, since it uses as much as digits as its factorization.

16774709749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 16774709749 in words is "sixteen billion, seven hundred seventy-four million, seven hundred nine thousand, seven hundred forty-nine".