20666141406 has 12 divisors (see below), whose sum is σ = 44776639752. Its totient is φ = 6888713796.

The previous prime is 20666141333. The next prime is 20666141417. The reversal of 20666141406 is 60414166602.

It is a super-2 number, since 2×20666141406² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574059466 + ... + 574059501.

It is an arithmetic number, because the mean of its divisors is an integer number (3731386646).

Almost surely, 2^20666141406 is an apocalyptic number.

20666141406 is an abundant number, since it is smaller than the sum of its proper divisors (24110498346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20666141406 is a wasteful number, since it uses less digits than its factorization.

20666141406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148118975 (or 1148118972 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 20666141406 in words is "twenty billion, six hundred sixty-six million, one hundred forty-one thousand, four hundred six".