21675520725272 has 32 divisors (see below), whose sum is σ = 41332972852800. Its totient is φ = 10653417127584.

The previous prime is 21675520725251. The next prime is 21675520725289. The reversal of 21675520725272 is 27252702557612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6355763 + ... + 9151325.

It is an arithmetic number, because the mean of its divisors is an integer number (1291655401650).

Almost surely, 2^{21675520725272} is an apocalyptic number.

It is an amenable number.

21675520725272 is a deficient number, since it is larger than the sum of its proper divisors (19657452127528).

21675520725272 is a wasteful number, since it uses less digits than its factorization.

21675520725272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812055 (or 2812051 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 53.

The spelling of 21675520725272 in words is "twenty-one trillion, six hundred seventy-five billion, five hundred twenty million, seven hundred twenty-five thousand, two hundred seventy-two".