21166130696 has 32 divisors (see below), whose sum is σ = 41420410560. Its totient is φ = 10120875072.

The previous prime is 21166130693. The next prime is 21166130717. The reversal of 21166130696 is 69603166112.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (21166130693) 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, 1287746 + ... + 1304078.

It is an arithmetic number, because the mean of its divisors is an integer number (1294387830).

Almost surely, 2^21166130696 is an apocalyptic number.

It is an amenable number.

21166130696 is a deficient number, since it is larger than the sum of its proper divisors (20254279864).

21166130696 is a wasteful number, since it uses less digits than its factorization.

21166130696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23405 (or 23401 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 21166130696 in words is "twenty-one billion, one hundred sixty-six million, one hundred thirty thousand, six hundred ninety-six".