20689826176 has 16 divisors (see below), whose sum is σ = 41218013340. Its totient is φ = 10344913024.

The previous prime is 20689826119. The next prime is 20689826177. The reversal of 20689826176 is 67162898602.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20689826177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80819506 + ... + 80819761.

Almost surely, 2^20689826176 is an apocalyptic number.

It is an amenable number.

20689826176 is a deficient number, since it is larger than the sum of its proper divisors (20528187164).

20689826176 is an equidigital number, since it uses as much as digits as its factorization.

20689826176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161639281 (or 161639269 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 20689826176 in words is "twenty billion, six hundred eighty-nine million, eight hundred twenty-six thousand, one hundred seventy-six".