17959138988 has 12 divisors (see below), whose sum is σ = 35918278032. Its totient is φ = 7696773840.

The previous prime is 17959138973. The next prime is 17959138991. The reversal of 17959138988 is 88983195971.

17959138988 is an admirable number.

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, 320698883 + ... + 320698938.

It is an arithmetic number, because the mean of its divisors is an integer number (2993189836).

Almost surely, 2^17959138988 is an apocalyptic number.

It is an amenable number.

17959138988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

17959138988 is a wasteful number, since it uses less digits than its factorization.

17959138988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641397832 (or 641397830 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 68.

The spelling of 17959138988 in words is "seventeen billion, nine hundred fifty-nine million, one hundred thirty-eight thousand, nine hundred eighty-eight".