17740940745 has 48 divisors (see below), whose sum is σ = 32043977280. Its totient is φ = 8369159040.

The previous prime is 17740940689. The next prime is 17740940747. The reversal of 17740940745 is 54704904771.

It is a happy number.

It is not a de Polignac number, because 17740940745 - 2⁹ = 17740940233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17740940694 and 17740940703.

It is not an unprimeable number, because it can be changed into a prime (17740940747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64935 + ... + 199244.

It is an arithmetic number, because the mean of its divisors is an integer number (667582860).

Almost surely, 2^17740940745 is an apocalyptic number.

17740940745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17740940745 is a deficient number, since it is larger than the sum of its proper divisors (14303036535).

17740940745 is a wasteful number, since it uses less digits than its factorization.

17740940745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264246 (or 264235 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 17740940745 in words is "seventeen billion, seven hundred forty million, nine hundred forty thousand, seven hundred forty-five".