17666284452 has 48 divisors (see below), whose sum is σ = 43098410880. Its totient is φ = 5621617408.

The previous prime is 17666284399. The next prime is 17666284459. The reversal of 17666284452 is 25448266671.

It is a junction number, because it is equal to n+sod(n) for n = 17666284395 and 17666284404.

It is not an unprimeable number, because it can be changed into a prime (17666284459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77608 + ... + 203360.

It is an arithmetic number, because the mean of its divisors is an integer number (897883560).

Almost surely, 2^17666284452 is an apocalyptic number.

17666284452 is a gapful number since it is divisible by the number (12) 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 17666284452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21549205440).

17666284452 is an abundant number, since it is smaller than the sum of its proper divisors (25432126428).

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

17666284452 is a wasteful number, since it uses less digits than its factorization.

17666284452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126292 (or 126290 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The spelling of 17666284452 in words is "seventeen billion, six hundred sixty-six million, two hundred eighty-four thousand, four hundred fifty-two".