16668301572 has 144 divisors (see below), whose sum is σ = 47626645248. Its totient is φ = 4876819200.

The previous prime is 16668301487. The next prime is 16668301579. The reversal of 16668301572 is 27510386661.

It is not an unprimeable number, because it can be changed into a prime (16668301579) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1857697 + ... + 1866647.

It is an arithmetic number, because the mean of its divisors is an integer number (330740592).

Almost surely, 2^16668301572 is an apocalyptic number.

16668301572 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 16668301572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23813322624).

16668301572 is an abundant number, since it is smaller than the sum of its proper divisors (30958343676).

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

16668301572 is a wasteful number, since it uses less digits than its factorization.

16668301572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170 (or 9165 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 16668301572 in words is "sixteen billion, six hundred sixty-eight million, three hundred one thousand, five hundred seventy-two".