21862168832 has 72 divisors (see below), whose sum is σ = 49956177600. Its totient is φ = 9353889792.

The previous prime is 21862168787. The next prime is 21862168837. The reversal of 21862168832 is 23886126812.

It is not an unprimeable number, because it can be changed into a prime (21862168837) 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, 1099394 + ... + 1119102.

It is an arithmetic number, because the mean of its divisors is an integer number (693835800).

Almost surely, 2^21862168832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21862168832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24978088800).

21862168832 is an abundant number, since it is smaller than the sum of its proper divisors (28094008768).

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

21862168832 is an equidigital number, since it uses as much as digits as its factorization.

21862168832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351 (or 20337 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The spelling of 21862168832 in words is "twenty-one billion, eight hundred sixty-two million, one hundred sixty-eight thousand, eight hundred thirty-two".