17897480538 has 16 divisors (see below), whose sum is σ = 40908527040. Its totient is φ = 5113565856.

The previous prime is 17897480533. The next prime is 17897480551. The reversal of 17897480538 is 83508479871.

It is not an unprimeable number, because it can be changed into a prime (17897480533) 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, 213065203 + ... + 213065286.

It is an arithmetic number, because the mean of its divisors is an integer number (2556782940).

Almost surely, 2^17897480538 is an apocalyptic number.

17897480538 is an abundant number, since it is smaller than the sum of its proper divisors (23011046502).

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

17897480538 is a wasteful number, since it uses less digits than its factorization.

17897480538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426130501.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 17897480538 in words is "seventeen billion, eight hundred ninety-seven million, four hundred eighty thousand, five hundred thirty-eight".