16763820749 has 8 divisors (see below), whose sum is σ = 18059233080. Its totient is φ = 15469249536.

The previous prime is 16763820737. The next prime is 16763820767. The reversal of 16763820749 is 94702836761.

It can be written as a sum of positive squares in 4 ways, for example, as 1590015625 + 15173805124 = 39875^2 + 123182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16763820749 - 2¹⁶ = 16763755213 is a prime.

It is a super-2 number, since 2×16763820749² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16763820749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16763820709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168572 + ... + 248885.

It is an arithmetic number, because the mean of its divisors is an integer number (2257404135).

Almost surely, 2^16763820749 is an apocalyptic number.

It is an amenable number.

16763820749 is a deficient number, since it is larger than the sum of its proper divisors (1295412331).

16763820749 is a wasteful number, since it uses less digits than its factorization.

16763820749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420559.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 16763820749 in words is "sixteen billion, seven hundred sixty-three million, eight hundred twenty thousand, seven hundred forty-nine".