21986491653199 has 8 divisors (see below), whose sum is σ = 23144552640000. Its totient is φ = 20828518387992.

The previous prime is 21986491653187. The next prime is 21986491653229. The reversal of 21986491653199 is 99135619468912.

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

It is a cyclic number.

It is not a de Polignac number, because 21986491653199 - 2⁴¹ = 19787468397647 is a prime.

It is a super-3 number, since 3×21986491653199³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21986491653149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21415609 + ... + 22418770.

It is an arithmetic number, because the mean of its divisors is an integer number (2893069080000).

Almost surely, 2^{21986491653199} is an apocalyptic number.

21986491653199 is a deficient number, since it is larger than the sum of its proper divisors (1158060986801).

21986491653199 is a wasteful number, since it uses less digits than its factorization.

21986491653199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43860797.

The product of its digits is 226748160, while the sum is 73.

The spelling of 21986491653199 in words is "twenty-one trillion, nine hundred eighty-six billion, four hundred ninety-one million, six hundred fifty-three thousand, one hundred ninety-nine".