21919600572 has 24 divisors (see below), whose sum is σ = 53837616000. Its totient is φ = 6921979056.

The previous prime is 21919600529. The next prime is 21919600589. The reversal of 21919600572 is 27500691912.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 48069072 + ... + 48069527.

It is an arithmetic number, because the mean of its divisors is an integer number (2243234000).

Almost surely, 2^21919600572 is an apocalyptic number.

It is an amenable number.

21919600572 is an abundant number, since it is smaller than the sum of its proper divisors (31918015428).

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

21919600572 is a wasteful number, since it uses less digits than its factorization.

21919600572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96138625 (or 96138623 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 21919600572 in words is "twenty-one billion, nine hundred nineteen million, six hundred thousand, five hundred seventy-two".