18660211868522 has 32 divisors (see below), whose sum is σ = 32642327203200. Its totient is φ = 7997097151680.

The previous prime is 18660211868497. The next prime is 18660211868531. The reversal of 18660211868522 is 22586811206681.

It is a super-2 number, since 2×18660211868522² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46979138 + ... + 47374674.

It is an arithmetic number, because the mean of its divisors is an integer number (1020072725100).

Almost surely, 2^{18660211868522} is an apocalyptic number.

18660211868522 is a deficient number, since it is larger than the sum of its proper divisors (13982115334678).

18660211868522 is an equidigital number, since it uses as much as digits as its factorization.

18660211868522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464331 (or 464317 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 56.

The spelling of 18660211868522 in words is "eighteen trillion, six hundred sixty billion, two hundred eleven million, eight hundred sixty-eight thousand, five hundred twenty-two".