18863423310512 has 40 divisors (see below), whose sum is σ = 39873954070272. Its totient is φ = 8573522760000.

The previous prime is 18863423310491. The next prime is 18863423310527. The reversal of 18863423310512 is 21501332436881.

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, 2761364 + ... + 6734387.

Almost surely, 2^{18863423310512} is an apocalyptic number.

It is an amenable number.

18863423310512 is an abundant number, since it is smaller than the sum of its proper divisors (21010530759760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18863423310512 is a wasteful number, since it uses less digits than its factorization.

18863423310512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507057 (or 9507051 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 18863423310512 in words is "eighteen trillion, eight hundred sixty-three billion, four hundred twenty-three million, three hundred ten thousand, five hundred twelve".