20667127772 has 12 divisors (see below), whose sum is σ = 36257669616. Its totient is φ = 10307793600.

The previous prime is 20667127751. The next prime is 20667127807. The reversal of 20667127772 is 27772176602.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6440768 + ... + 6443975.

It is an arithmetic number, because the mean of its divisors is an integer number (3021472468).

Almost surely, 2^20667127772 is an apocalyptic number.

It is an amenable number.

20667127772 is a deficient number, since it is larger than the sum of its proper divisors (15590541844).

20667127772 is a wasteful number, since it uses less digits than its factorization.

20667127772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12885148 (or 12885146 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 20667127772 in words is "twenty billion, six hundred sixty-seven million, one hundred twenty-seven thousand, seven hundred seventy-two".