17997831075 has 54 divisors (see below), whose sum is σ = 34630252644. Its totient is φ = 8223862080.

The previous prime is 17997831037. The next prime is 17997831083. The reversal of 17997831075 is 57013879971.

It is a happy number.

It is not a de Polignac number, because 17997831075 - 2⁶ = 17997831011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 8131669 + ... + 8133881.

Almost surely, 2^17997831075 is an apocalyptic number.

17997831075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

17997831075 is a deficient number, since it is larger than the sum of its proper divisors (16632421569).

17997831075 is an frugal number, since it uses more digits than its factorization.

17997831075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 57.

The spelling of 17997831075 in words is "seventeen billion, nine hundred ninety-seven million, eight hundred thirty-one thousand, seventy-five".