20466606140 has 48 divisors (see below), whose sum is σ = 43815854880. Its totient is φ = 8027585280.

The previous prime is 20466606109. The next prime is 20466606191. The reversal of 20466606140 is 4160666402.

It is a self number, because there is not a number n which added to its sum of digits gives 20466606140.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2305310 + ... + 2314170.

It is an arithmetic number, because the mean of its divisors is an integer number (912830310).

Almost surely, 2^20466606140 is an apocalyptic number.

20466606140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20466606140 is an abundant number, since it is smaller than the sum of its proper divisors (23349248740).

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

20466606140 is a wasteful number, since it uses less digits than its factorization.

20466606140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102 (or 11100 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 20466606140 in words is "twenty billion, four hundred sixty-six million, six hundred six thousand, one hundred forty".