20326603660 has 36 divisors (see below), whose sum is σ = 46919182464. Its totient is φ = 7391491360.

The previous prime is 20326603607. The next prime is 20326603669. The reversal of 20326603660 is 6630662302.

It is not an unprimeable number, because it can be changed into a prime (20326603669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4197292 + ... + 4202131.

It is an arithmetic number, because the mean of its divisors is an integer number (1303310624).

Almost surely, 2^20326603660 is an apocalyptic number.

20326603660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20326603660 is an abundant number, since it is smaller than the sum of its proper divisors (26592578804).

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

20326603660 is a wasteful number, since it uses less digits than its factorization.

20326603660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399454 (or 8399441 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 20326603660 in words is "twenty billion, three hundred twenty-six million, six hundred three thousand, six hundred sixty".