21692108132 has 12 divisors (see below), whose sum is σ = 37969362816. Its totient is φ = 10843718760.

The previous prime is 21692108131. The next prime is 21692108147. The reversal of 21692108132 is 23180129612.

It is a junction number, because it is equal to n+sod(n) for n = 21692108092 and 21692108101.

It is not an unprimeable number, because it can be changed into a prime (21692108131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562844 + ... + 600147.

It is an arithmetic number, because the mean of its divisors is an integer number (3164113568).

Almost surely, 2^21692108132 is an apocalyptic number.

It is an amenable number.

21692108132 is a deficient number, since it is larger than the sum of its proper divisors (16277254684).

21692108132 is a wasteful number, since it uses less digits than its factorization.

21692108132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167658 (or 1167656 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 21692108132 in words is "twenty-one billion, six hundred ninety-two million, one hundred eight thousand, one hundred thirty-two".