20669092942187 has 8 divisors (see below), whose sum is σ = 20674931251920. Its totient is φ = 20663255100960.

The previous prime is 20669092942159. The next prime is 20669092942219. The reversal of 20669092942187 is 78124929096602.

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 20669092942187 - 2²² = 20669088747883 is a prime.

It is a super-2 number, since 2×20669092942187² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20669092942117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100008137 + ... + 100214597.

It is an arithmetic number, because the mean of its divisors is an integer number (2584366406490).

Almost surely, 2^{20669092942187} is an apocalyptic number.

20669092942187 is a deficient number, since it is larger than the sum of its proper divisors (5838309733).

20669092942187 is a wasteful number, since it uses less digits than its factorization.

20669092942187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234253.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 20669092942187 in words is "twenty trillion, six hundred sixty-nine billion, ninety-two million, nine hundred forty-two thousand, one hundred eighty-seven".