21432223192 has 8 divisors (see below), whose sum is σ = 40185418500. Its totient is φ = 10716111592.

The previous prime is 21432223151. The next prime is 21432223223. The reversal of 21432223192 is 29132223412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339513942 + ... + 1339513957.

Almost surely, 2^21432223192 is an apocalyptic number.

It is an amenable number.

21432223192 is a deficient number, since it is larger than the sum of its proper divisors (18753195308).

21432223192 is a wasteful number, since it uses less digits than its factorization.

21432223192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679027905 (or 2679027901 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The spelling of 21432223192 in words is "twenty-one billion, four hundred thirty-two million, two hundred twenty-three thousand, one hundred ninety-two".