17997393144 has 16 divisors (see below), whose sum is σ = 44993482920. Its totient is φ = 5999131040.

The previous prime is 17997393131. The next prime is 17997393149. The reversal of 17997393144 is 44139379971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17997393149) 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 3 ways as a sum of consecutive naturals, for example, 374945667 + ... + 374945714.

Almost surely, 2^17997393144 is an apocalyptic number.

It is an amenable number.

17997393144 is an abundant number, since it is smaller than the sum of its proper divisors (26996089776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17997393144 is a wasteful number, since it uses less digits than its factorization.

17997393144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749891390 (or 749891386 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 57.

The spelling of 17997393144 in words is "seventeen billion, nine hundred ninety-seven million, three hundred ninety-three thousand, one hundred forty-four".