20583909660 has 24 divisors (see below), whose sum is σ = 57634947216. Its totient is φ = 5489042560.

The previous prime is 20583909641. The next prime is 20583909707. The reversal of 20583909660 is 6690938502.

It is a super-3 number, since 3×20583909660³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171532521 + ... + 171532640.

It is an arithmetic number, because the mean of its divisors is an integer number (2401456134).

Almost surely, 2^20583909660 is an apocalyptic number.

20583909660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20583909660 is an abundant number, since it is smaller than the sum of its proper divisors (37051037556).

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

20583909660 is a wasteful number, since it uses less digits than its factorization.

20583909660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343065173 (or 343065171 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 20583909660 in words is "twenty billion, five hundred eighty-three million, nine hundred nine thousand, six hundred sixty".