21152166416306 has 8 divisors (see below), whose sum is σ = 31752304404480. Its totient is φ = 10568064948148.

The previous prime is 21152166416299. The next prime is 21152166416357. The reversal of 21152166416306 is 60361466125112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4009126706 + ... + 4009131981.

It is an arithmetic number, because the mean of its divisors is an integer number (3969038050560).

Almost surely, 2^{21152166416306} is an apocalyptic number.

21152166416306 is a deficient number, since it is larger than the sum of its proper divisors (10600137988174).

21152166416306 is a wasteful number, since it uses less digits than its factorization.

21152166416306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018260008.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 21152166416306 in words is "twenty-one trillion, one hundred fifty-two billion, one hundred sixty-six million, four hundred sixteen thousand, three hundred six".