21493006192 has 40 divisors (see below), whose sum is σ = 47699197056. Its totient is φ = 9190474176.

The previous prime is 21493006133. The next prime is 21493006193. The reversal of 21493006192 is 29160039412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21493006193) 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, 166978 + ... + 266209.

Almost surely, 2^21493006192 is an apocalyptic number.

It is an amenable number.

21493006192 is an abundant number, since it is smaller than the sum of its proper divisors (26206190864).

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

21493006192 is a wasteful number, since it uses less digits than its factorization.

21493006192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433645 (or 433639 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 21493006192 in words is "twenty-one billion, four hundred ninety-three million, six thousand, one hundred ninety-two".