20166900069 has 8 divisors (see below), whose sum is σ = 26889959872. Its totient is φ = 13444220160.

The previous prime is 20166900041. The next prime is 20166900071. The reversal of 20166900069 is 96000966102.

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

It is not a de Polignac number, because 20166900069 - 2⁵ = 20166900037 is a prime.

It is a super-2 number, since 2×20166900069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166900079) 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, 69672 + ... + 212574.

It is an arithmetic number, because the mean of its divisors is an integer number (3361244984).

Almost surely, 2^20166900069 is an apocalyptic number.

It is an amenable number.

20166900069 is a deficient number, since it is larger than the sum of its proper divisors (6723059803).

20166900069 is a wasteful number, since it uses less digits than its factorization.

20166900069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189947.

The product of its (nonzero) digits is 34992, while the sum is 39.

The spelling of 20166900069 in words is "twenty billion, one hundred sixty-six million, nine hundred thousand, sixty-nine".