17691749053 has 32 divisors (see below), whose sum is σ = 20684926080. Its totient is φ = 14961024000.

The previous prime is 17691748981. The next prime is 17691749059. The reversal of 17691749053 is 35094719671.

It is a cyclic number.

It is not a de Polignac number, because 17691749053 - 2¹³ = 17691740861 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17691749059) 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 31 ways as a sum of consecutive naturals, for example, 11945073 + ... + 11946553.

It is an arithmetic number, because the mean of its divisors is an integer number (646403940).

Almost surely, 2^17691749053 is an apocalyptic number.

It is an amenable number.

17691749053 is a deficient number, since it is larger than the sum of its proper divisors (2993177027).

17691749053 is a wasteful number, since it uses less digits than its factorization.

17691749053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 17691749053 in words is "seventeen billion, six hundred ninety-one million, seven hundred forty-nine thousand, fifty-three".