20327577772 has 24 divisors (see below), whose sum is σ = 35978249216. Its totient is φ = 10048405968.

The previous prime is 20327577763. The next prime is 20327577779. The reversal of 20327577772 is 27777572302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20327577779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209443 + ... + 290725.

Almost surely, 2^20327577772 is an apocalyptic number.

It is an amenable number.

20327577772 is a deficient number, since it is larger than the sum of its proper divisors (15650671444).

20327577772 is a wasteful number, since it uses less digits than its factorization.

20327577772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81997 (or 81995 counting only the distinct ones).

The product of its (nonzero) digits is 2016840, while the sum is 49.

The spelling of 20327577772 in words is "twenty billion, three hundred twenty-seven million, five hundred seventy-seven thousand, seven hundred seventy-two".