21650241630 has 32 divisors (see below), whose sum is σ = 52437290400. Its totient is φ = 5720429952.

The previous prime is 21650241629. The next prime is 21650241637. The reversal of 21650241630 is 3614205612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21650241637) by changing a digit.

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, 3307165 + ... + 3313704.

It is an arithmetic number, because the mean of its divisors is an integer number (1638665325).

Almost surely, 2^21650241630 is an apocalyptic number.

21650241630 is an abundant number, since it is smaller than the sum of its proper divisors (30787048770).

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

21650241630 is a wasteful number, since it uses less digits than its factorization.

21650241630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6620988.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 21650241630 in words is "twenty-one billion, six hundred fifty million, two hundred forty-one thousand, six hundred thirty".