20866440660482 has 16 divisors (see below), whose sum is σ = 31588573059072. Its totient is φ = 10337137443360.

The previous prime is 20866440660431. The next prime is 20866440660497. The reversal of 20866440660482 is 28406604466802.

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, 55094819 + ... + 55472262.

It is an arithmetic number, because the mean of its divisors is an integer number (1974285816192).

Almost surely, 2^{20866440660482} is an apocalyptic number.

20866440660482 is a deficient number, since it is larger than the sum of its proper divisors (10722132398590).

20866440660482 is a wasteful number, since it uses less digits than its factorization.

20866440660482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110567953.

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 20866440660482 in words is "twenty trillion, eight hundred sixty-six billion, four hundred forty million, six hundred sixty thousand, four hundred eighty-two".