17897506816 has 96 divisors (see below), whose sum is σ = 41020499520. Its totient is φ = 7647510528.

The previous prime is 17897506769. The next prime is 17897506841. The reversal of 17897506816 is 61860579871.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5345655 + ... + 5349001.

It is an arithmetic number, because the mean of its divisors is an integer number (427296870).

Almost surely, 2^17897506816 is an apocalyptic number.

17897506816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17897506816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20510249760).

17897506816 is an abundant number, since it is smaller than the sum of its proper divisors (23122992704).

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

17897506816 is an equidigital number, since it uses as much as digits as its factorization.

17897506816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749 (or 3729 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 17897506816 in words is "seventeen billion, eight hundred ninety-seven million, five hundred six thousand, eight hundred sixteen".