21763650500 has 48 divisors (see below), whose sum is σ = 47661729024. Its totient is φ = 8681666400.

The previous prime is 21763650499. The next prime is 21763650551. The reversal of 21763650500 is 505636712.

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, 124199 + ... + 242801.

It is an arithmetic number, because the mean of its divisors is an integer number (992952688).

Almost surely, 2^21763650500 is an apocalyptic number.

21763650500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21763650500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23830864512).

21763650500 is an abundant number, since it is smaller than the sum of its proper divisors (25898078524).

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

21763650500 is a wasteful number, since it uses less digits than its factorization.

21763650500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118989 (or 118977 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 21763650500 in words is "twenty-one billion, seven hundred sixty-three million, six hundred fifty thousand, five hundred".