17997545377 has 8 divisors (see below), whose sum is σ = 21277886400. Its totient is φ = 14894520144.

The previous prime is 17997545353. The next prime is 17997545417. The reversal of 17997545377 is 77354579971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-17997545377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17997545317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44328727 + ... + 44329132.

It is an arithmetic number, because the mean of its divisors is an integer number (2659735800).

Almost surely, 2^17997545377 is an apocalyptic number.

It is an amenable number.

17997545377 is a deficient number, since it is larger than the sum of its proper divisors (3280341023).

17997545377 is an equidigital number, since it uses as much as digits as its factorization.

17997545377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88657895.

The product of its digits is 58344300, while the sum is 64.

The spelling of 17997545377 in words is "seventeen billion, nine hundred ninety-seven million, five hundred forty-five thousand, three hundred seventy-seven".