17004099978 has 24 divisors (see below), whose sum is σ = 36844867488. Its totient is φ = 5667625512.

The previous prime is 17004099919. The next prime is 17004100037. The reversal of 17004099978 is 87999040071.

It is an interprime number because it is at equal distance from previous prime (17004099919) and next prime (17004100037).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326451 + ... + 374937.

It is an arithmetic number, because the mean of its divisors is an integer number (1535202812).

Almost surely, 2^17004099978 is an apocalyptic number.

17004099978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

17004099978 is an abundant number, since it is smaller than the sum of its proper divisors (19840767510).

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

17004099978 is a wasteful number, since it uses less digits than its factorization.

17004099978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67978 (or 67975 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 17004099978 in words is "seventeen billion, four million, ninety-nine thousand, nine hundred seventy-eight".