21882648215 has 8 divisors (see below), whose sum is σ = 26754634368. Its totient is φ = 17175814240.

The previous prime is 21882648211. The next prime is 21882648241. The reversal of 21882648215 is 51284628812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21882648215 - 2² = 21882648211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21882648215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21882648211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41287751 + ... + 41288280.

It is an arithmetic number, because the mean of its divisors is an integer number (3344329296).

Almost surely, 2^21882648215 is an apocalyptic number.

21882648215 is a deficient number, since it is larger than the sum of its proper divisors (4871986153).

21882648215 is an equidigital number, since it uses as much as digits as its factorization.

21882648215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82576089.

The product of its digits is 491520, while the sum is 47.

The spelling of 21882648215 in words is "twenty-one billion, eight hundred eighty-two million, six hundred forty-eight thousand, two hundred fifteen".