13866827421 has 8 divisors (see below), whose sum is σ = 18672164064. Its totient is φ = 9153021200.

The previous prime is 13866827389. The next prime is 13866827441. The reversal of 13866827421 is 12472866831.

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 13866827421 - 2⁵ = 13866827389 is a prime.

It is a super-2 number, since 2×13866827421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13866827441) 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, 22882251 + ... + 22882856.

It is an arithmetic number, because the mean of its divisors is an integer number (2334020508).

Almost surely, 2^13866827421 is an apocalyptic number.

It is an amenable number.

13866827421 is a deficient number, since it is larger than the sum of its proper divisors (4805336643).

13866827421 is a wasteful number, since it uses less digits than its factorization.

13866827421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45765211.

The product of its digits is 774144, while the sum is 48.

The spelling of 13866827421 in words is "thirteen billion, eight hundred sixty-six million, eight hundred twenty-seven thousand, four hundred twenty-one".