21712429750 has 64 divisors (see below), whose sum is σ = 46949108544. Its totient is φ = 7430976000.

The previous prime is 21712429747. The next prime is 21712429751. The reversal of 21712429750 is 5792421712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21712429751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185469 + ... + 278968.

It is an arithmetic number, because the mean of its divisors is an integer number (733579821).

Almost surely, 2^21712429750 is an apocalyptic number.

21712429750 is an abundant number, since it is smaller than the sum of its proper divisors (25236678794).

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

21712429750 is a wasteful number, since it uses less digits than its factorization.

21712429750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464482 (or 464472 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 21712429750 in words is "twenty-one billion, seven hundred twelve million, four hundred twenty-nine thousand, seven hundred fifty".