17798794660 has 24 divisors (see below), whose sum is σ = 38666348280. Its totient is φ = 6874017024.

The previous prime is 17798794627. The next prime is 17798794667. The reversal of 17798794660 is 6649789771.

It can be written as a sum of positive squares in 4 ways, for example, as 7588500544 + 10210294116 = 87112^2 + 101046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 17798794592 and 17798794601.

It is not an unprimeable number, because it can be changed into a prime (17798794667) 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 in 7 ways as a sum of consecutive naturals, for example, 15343209 + ... + 15344368.

It is an arithmetic number, because the mean of its divisors is an integer number (1611097845).

Almost surely, 2^17798794660 is an apocalyptic number.

17798794660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17798794660 is an abundant number, since it is smaller than the sum of its proper divisors (20867553620).

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

17798794660 is a wasteful number, since it uses less digits than its factorization.

17798794660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30687615 (or 30687613 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 17798794660 in words is "seventeen billion, seven hundred ninety-eight million, seven hundred ninety-four thousand, six hundred sixty".