21326233484 has 6 divisors (see below), whose sum is σ = 37320908604. Its totient is φ = 10663116740.

The previous prime is 21326233471. The next prime is 21326233501. The reversal of 21326233484 is 48433262312.

It is a super-2 number, since 2×21326233484² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665779182 + ... + 2665779189.

It is an arithmetic number, because the mean of its divisors is an integer number (6220151434).

Almost surely, 2^21326233484 is an apocalyptic number.

It is an amenable number.

21326233484 is a deficient number, since it is larger than the sum of its proper divisors (15994675120).

21326233484 is a wasteful number, since it uses less digits than its factorization.

21326233484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331558375 (or 5331558373 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

Adding to 21326233484 its reverse (48433262312), we get a palindrome (69759495796).

The spelling of 21326233484 in words is "twenty-one billion, three hundred twenty-six million, two hundred thirty-three thousand, four hundred eighty-four".