21484741688 has 32 divisors (see below), whose sum is σ = 40765323600. Its totient is φ = 10614160128.

The previous prime is 21484741687. The next prime is 21484741697. The reversal of 21484741688 is 88614748412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21484741687) 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, 1074470 + ... + 1094282.

Almost surely, 2^21484741688 is an apocalyptic number.

It is an amenable number.

21484741688 is a deficient number, since it is larger than the sum of its proper divisors (19280581912).

21484741688 is a wasteful number, since it uses less digits than its factorization.

21484741688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431 (or 21427 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The spelling of 21484741688 in words is "twenty-one billion, four hundred eighty-four million, seven hundred forty-one thousand, six hundred eighty-eight".