21417812260994 has 8 divisors (see below), whose sum is σ = 32199899983680. Its totient is φ = 10684512266436.

The previous prime is 21417812260987. The next prime is 21417812261009. The reversal of 21417812260994 is 49906221871412.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12196930934 + ... + 12196932689.

It is an arithmetic number, because the mean of its divisors is an integer number (4024987497960).

Almost surely, 2^{21417812260994} is an apocalyptic number.

21417812260994 is a deficient number, since it is larger than the sum of its proper divisors (10782087722686).

21417812260994 is a wasteful number, since it uses less digits than its factorization.

21417812260994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24393864064.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 21417812260994 in words is "twenty-one trillion, four hundred seventeen billion, eight hundred twelve million, two hundred sixty thousand, nine hundred ninety-four".