17897320844 has 12 divisors (see below), whose sum is σ = 33729566304. Its totient is φ = 8260301904.

The previous prime is 17897320823. The next prime is 17897320853. The reversal of 17897320844 is 44802379871.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172089572 + ... + 172089675.

It is an arithmetic number, because the mean of its divisors is an integer number (2810797192).

Almost surely, 2^17897320844 is an apocalyptic number.

It is an amenable number.

17897320844 is a deficient number, since it is larger than the sum of its proper divisors (15832245460).

17897320844 is a wasteful number, since it uses less digits than its factorization.

17897320844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344179264 (or 344179262 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 17897320844 in words is "seventeen billion, eight hundred ninety-seven million, three hundred twenty thousand, eight hundred forty-four".