17385909983 has 24 divisors (see below), whose sum is σ = 19488112128. Its totient is φ = 15491129472.

The previous prime is 17385909953. The next prime is 17385909991. The reversal of 17385909983 is 38990958371.

It is a happy number.

It is not a de Polignac number, because 17385909983 - 2⁸ = 17385909727 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 (17385909953) 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, 783185 + ... + 805077.

It is an arithmetic number, because the mean of its divisors is an integer number (812004672).

Almost surely, 2^17385909983 is an apocalyptic number.

17385909983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

17385909983 is a deficient number, since it is larger than the sum of its proper divisors (2102202145).

17385909983 is a wasteful number, since it uses less digits than its factorization.

17385909983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22083 (or 22070 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 17385909983 in words is "seventeen billion, three hundred eighty-five million, nine hundred nine thousand, nine hundred eighty-three".