21766548696 has 32 divisors (see below), whose sum is σ = 54420864000. Its totient is φ = 7254917280.

The previous prime is 21766548667. The next prime is 21766548697. The reversal of 21766548696 is 69684566712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21766548697) 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, 334941 + ... + 394611.

It is an arithmetic number, because the mean of its divisors is an integer number (1700652000).

Almost surely, 2^21766548696 is an apocalyptic number.

It is an amenable number.

21766548696 is an abundant number, since it is smaller than the sum of its proper divisors (32654315304).

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

21766548696 is a wasteful number, since it uses less digits than its factorization.

21766548696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74879 (or 74875 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The spelling of 21766548696 in words is "twenty-one billion, seven hundred sixty-six million, five hundred forty-eight thousand, six hundred ninety-six".