21586055383267 has 8 divisors (see below), whose sum is σ = 21603664717776. Its totient is φ = 21568447155552.

The previous prime is 21586055383187. The next prime is 21586055383289. The reversal of 21586055383267 is 76238355068512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21586055383267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21586055383367) 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, 41284848 + ... + 41804434.

It is an arithmetic number, because the mean of its divisors is an integer number (2700458089722).

Almost surely, 2^{21586055383267} is an apocalyptic number.

21586055383267 is a deficient number, since it is larger than the sum of its proper divisors (17609334509).

21586055383267 is a wasteful number, since it uses less digits than its factorization.

21586055383267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553397.

The product of its (nonzero) digits is 72576000, while the sum is 61.

The spelling of 21586055383267 in words is "twenty-one trillion, five hundred eighty-six billion, fifty-five million, three hundred eighty-three thousand, two hundred sixty-seven".