21717534010 has 16 divisors (see below), whose sum is σ = 39182268672. Its totient is φ = 8666856400.

The previous prime is 21717534001. The next prime is 21717534037. The reversal of 21717534010 is 1043571712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515126 + ... + 2523745.

It is an arithmetic number, because the mean of its divisors is an integer number (2448891792).

Almost surely, 2^21717534010 is an apocalyptic number.

21717534010 is a deficient number, since it is larger than the sum of its proper divisors (17464734662).

21717534010 is a wasteful number, since it uses less digits than its factorization.

21717534010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039309.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 21717534010 in words is "twenty-one billion, seven hundred seventeen million, five hundred thirty-four thousand, ten".