17381697988 has 6 divisors (see below), whose sum is σ = 30417971486. Its totient is φ = 8690848992.

The previous prime is 17381697979. The next prime is 17381697989. The reversal of 17381697988 is 88979618371.

It can be written as a sum of positive squares in only one way, i.e., 16829353984 + 552344004 = 129728^2 + 23502^2 .

It is not an unprimeable number, because it can be changed into a prime (17381697989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2172712245 + ... + 2172712252.

Almost surely, 2^17381697988 is an apocalyptic number.

It is an amenable number.

17381697988 is a deficient number, since it is larger than the sum of its proper divisors (13036273498).

17381697988 is a wasteful number, since it uses less digits than its factorization.

17381697988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345424501 (or 4345424499 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 67.

The spelling of 17381697988 in words is "seventeen billion, three hundred eighty-one million, six hundred ninety-seven thousand, nine hundred eighty-eight".