20064600440 has 16 divisors (see below), whose sum is σ = 45145351080. Its totient is φ = 8025840160.

The previous prime is 20064600433. The next prime is 20064600443. The reversal of 20064600440 is 4400646002.

It is a super-3 number, since 3×20064600440³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20064600443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250807466 + ... + 250807545.

Almost surely, 2^20064600440 is an apocalyptic number.

20064600440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20064600440 is an abundant number, since it is smaller than the sum of its proper divisors (25080750640).

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

20064600440 is a wasteful number, since it uses less digits than its factorization.

20064600440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501615022 (or 501615018 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 20064600440 in words is "twenty billion, sixty-four million, six hundred thousand, four hundred forty".