16423675749 has 24 divisors (see below), whose sum is σ = 26494165152. Its totient is φ = 10106875440.

The previous prime is 16423675747. The next prime is 16423675759. The reversal of 16423675749 is 94757632461.

16423675749 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 3 + 67 + 574 + 9 = 666.

It is not a de Polignac number, because 16423675749 - 2¹ = 16423675747 is a prime.

It is a super-2 number, since 2×16423675749² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16423675695 and 16423675704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423675747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2596347 + ... + 2602664.

It is an arithmetic number, because the mean of its divisors is an integer number (1103923548).

Almost surely, 2^16423675749 is an apocalyptic number.

It is an amenable number.

16423675749 is a deficient number, since it is larger than the sum of its proper divisors (10070489403).

16423675749 is an equidigital number, since it uses as much as digits as its factorization.

16423675749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199039 (or 5199027 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 16423675749 in words is "sixteen billion, four hundred twenty-three million, six hundred seventy-five thousand, seven hundred forty-nine".