21875208104266 has 16 divisors (see below), whose sum is σ = 35807723143488. Its totient is φ = 9939963060000.

The previous prime is 21875208104237. The next prime is 21875208104297. The reversal of 21875208104266 is 66240180257812.

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, 165600030 + ... + 165732073.

It is an arithmetic number, because the mean of its divisors is an integer number (2237982696468).

Almost surely, 2^{21875208104266} is an apocalyptic number.

21875208104266 is a deficient number, since it is larger than the sum of its proper divisors (13932515039222).

21875208104266 is a wasteful number, since it uses less digits than its factorization.

21875208104266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331335117.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 21875208104266 in words is "twenty-one trillion, eight hundred seventy-five billion, two hundred eight million, one hundred four thousand, two hundred sixty-six".