17996390038 has 16 divisors (see below), whose sum is σ = 29500413840. Its totient is φ = 8165795200.

The previous prime is 17996390033. The next prime is 17996390039. The reversal of 17996390038 is 83009369971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17996390033) 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, 706303 + ... + 731338.

It is an arithmetic number, because the mean of its divisors is an integer number (1843775865).

Almost surely, 2^17996390038 is an apocalyptic number.

17996390038 is a deficient number, since it is larger than the sum of its proper divisors (11504023802).

17996390038 is a wasteful number, since it uses less digits than its factorization.

17996390038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438223.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The spelling of 17996390038 in words is "seventeen billion, nine hundred ninety-six million, three hundred ninety thousand, thirty-eight".