21883791468 has 96 divisors (see below), whose sum is σ = 63692955648. Its totient is φ = 5681332800.

The previous prime is 21883791463. The next prime is 21883791473. The reversal of 21883791468 is 86419738812.

It is an interprime number because it is at equal distance from previous prime (21883791463) and next prime (21883791473).

It is not an unprimeable number, because it can be changed into a prime (21883791463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2463571 + ... + 2472437.

It is an arithmetic number, because the mean of its divisors is an integer number (663468288).

Almost surely, 2^21883791468 is an apocalyptic number.

21883791468 is a gapful number since it is divisible by the number (28) 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 21883791468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31846477824).

21883791468 is an abundant number, since it is smaller than the sum of its proper divisors (41809164180).

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

21883791468 is a wasteful number, since it uses less digits than its factorization.

21883791468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563 (or 11561 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The spelling of 21883791468 in words is "twenty-one billion, eight hundred eighty-three million, seven hundred ninety-one thousand, four hundred sixty-eight".