20064576881 has 8 divisors (see below), whose sum is σ = 20540471424. Its totient is φ = 19589104080.

The previous prime is 20064576871. The next prime is 20064576929. The reversal of 20064576881 is 18867546002.

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

It is not a de Polignac number, because 20064576881 - 2⁶ = 20064576817 is a prime.

It is a super-2 number, since 2×20064576881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20064576871) 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, 8105 + ... + 200486.

It is an arithmetic number, because the mean of its divisors is an integer number (2567558928).

Almost surely, 2^20064576881 is an apocalyptic number.

It is an amenable number.

20064576881 is a deficient number, since it is larger than the sum of its proper divisors (475894543).

20064576881 is a wasteful number, since it uses less digits than its factorization.

20064576881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210871.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 20064576881 in words is "twenty billion, sixty-four million, five hundred seventy-six thousand, eight hundred eighty-one".