20485580512 has 48 divisors (see below), whose sum is σ = 43917627600. Its totient is φ = 9369077760.

The previous prime is 20485580477. The next prime is 20485580519. The reversal of 20485580512 is 21508558402.

It is a super-3 number, since 3×20485580512³ (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 (20485580519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563289 + ... + 598552.

It is an arithmetic number, because the mean of its divisors is an integer number (914950575).

Almost surely, 2^20485580512 is an apocalyptic number.

It is an amenable number.

20485580512 is an abundant number, since it is smaller than the sum of its proper divisors (23432047088).

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

20485580512 is a wasteful number, since it uses less digits than its factorization.

20485580512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161899 (or 1161891 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 40.

The spelling of 20485580512 in words is "twenty billion, four hundred eighty-five million, five hundred eighty thousand, five hundred twelve".