20664266504 has 32 divisors (see below), whose sum is σ = 44314300800. Its totient is φ = 8849368320.

The previous prime is 20664266503. The next prime is 20664266509. The reversal of 20664266504 is 40566246602.

It is a super-3 number, since 3×20664266504³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20664266503) 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, 66017 + ... + 213744.

It is an arithmetic number, because the mean of its divisors is an integer number (1384821900).

Almost surely, 2^20664266504 is an apocalyptic number.

It is an amenable number.

20664266504 is an abundant number, since it is smaller than the sum of its proper divisors (23650034296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20664266504 is a wasteful number, since it uses less digits than its factorization.

20664266504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281093 (or 281089 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 20664266504 in words is "twenty billion, six hundred sixty-four million, two hundred sixty-six thousand, five hundred four".