17666668460 has 96 divisors (see below), whose sum is σ = 44349161472. Its totient is φ = 5779952640.

The previous prime is 17666668421. The next prime is 17666668463. The reversal of 17666668460 is 6486666671.

It is a super-2 number, since 2×17666668460² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17666668396 and 17666668405.

It is not an unprimeable number, because it can be changed into a prime (17666668463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1387925 + ... + 1400595.

It is an arithmetic number, because the mean of its divisors is an integer number (461970432).

Almost surely, 2^17666668460 is an apocalyptic number.

17666668460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17666668460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22174580736).

17666668460 is an abundant number, since it is smaller than the sum of its proper divisors (26682493012).

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

17666668460 is a wasteful number, since it uses less digits than its factorization.

17666668460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143 (or 13141 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 17666668460 in words is "seventeen billion, six hundred sixty-six million, six hundred sixty-eight thousand, four hundred sixty".