21760351152 has 160 divisors (see below), whose sum is σ = 63625927680. Its totient is φ = 6370467840.

The previous prime is 21760351133. The next prime is 21760351159. The reversal of 21760351152 is 25115306712.

It is not an unprimeable number, because it can be changed into a prime (21760351159) 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 31 ways as a sum of consecutive naturals, for example, 755349 + ... + 783627.

It is an arithmetic number, because the mean of its divisors is an integer number (397662048).

Almost surely, 2^21760351152 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 21760351152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31812963840).

21760351152 is an abundant number, since it is smaller than the sum of its proper divisors (41865576528).

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

21760351152 is a wasteful number, since it uses less digits than its factorization.

21760351152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28371 (or 28365 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

Adding to 21760351152 its reverse (25115306712), we get a palindrome (46875657864).

The spelling of 21760351152 in words is "twenty-one billion, seven hundred sixty million, three hundred fifty-one thousand, one hundred fifty-two".