21752230670 has 16 divisors (see below), whose sum is σ = 39370339008. Its totient is φ = 8652820320.

The previous prime is 21752230667. The next prime is 21752230723. The reversal of 21752230670 is 7603225712.

It is a self number, because there is not a number n which added to its sum of digits gives 21752230670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6007094 + ... + 6010713.

It is an arithmetic number, because the mean of its divisors is an integer number (2460646188).

Almost surely, 2^21752230670 is an apocalyptic number.

21752230670 is a deficient number, since it is larger than the sum of its proper divisors (17618108338).

21752230670 is a wasteful number, since it uses less digits than its factorization.

21752230670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12017995.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 21752230670 in words is "twenty-one billion, seven hundred fifty-two million, two hundred thirty thousand, six hundred seventy".