566987267421 has 16 divisors (see below), whose sum is σ = 848297785920. Its totient is φ = 374249019600.

The previous prime is 566987267369. The next prime is 566987267423. The reversal of 566987267421 is 124762789665.

566987267421 is a `hidden beast` number, since 5 + 66 + 98 + 7 + 2 + 67 + 421 = 666.

It is not a de Polignac number, because 566987267421 - 2²⁵ = 566953712989 is a prime.

It is a super-2 number, since 2×566987267421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566987267423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103955335 + ... + 103960788.

It is an arithmetic number, because the mean of its divisors is an integer number (53018611620).

Almost surely, 2^566987267421 is an apocalyptic number.

It is an amenable number.

566987267421 is a deficient number, since it is larger than the sum of its proper divisors (281310518499).

566987267421 is a wasteful number, since it uses less digits than its factorization.

566987267421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207916233 (or 207916227 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 566987267421 in words is "five hundred sixty-six billion, nine hundred eighty-seven million, two hundred sixty-seven thousand, four hundred twenty-one".