21517075250224 has 10 divisors (see below), whose sum is σ = 41689333297340. Its totient is φ = 10758537625104.

The previous prime is 21517075250213. The next prime is 21517075250239. The reversal of 21517075250224 is 42205257071512.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672408601554 + ... + 672408601585.

It is an arithmetic number, because the mean of its divisors is an integer number (4168933329734).

Almost surely, 2^{21517075250224} is an apocalyptic number.

It is an amenable number.

21517075250224 is a deficient number, since it is larger than the sum of its proper divisors (20172258047116).

21517075250224 is a wasteful number, since it uses less digits than its factorization.

21517075250224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344817203147 (or 1344817203141 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 43.

The spelling of 21517075250224 in words is "twenty-one trillion, five hundred seventeen billion, seventy-five million, two hundred fifty thousand, two hundred twenty-four".