18850666873539 has 32 divisors (see below), whose sum is σ = 27783675648000. Its totient is φ = 11307953175552.

The previous prime is 18850666873499. The next prime is 18850666873543. The reversal of 18850666873539 is 93537866605881.

It is not a de Polignac number, because 18850666873539 - 2¹² = 18850666869443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18850666873559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674802 + ... + 6364455.

It is an arithmetic number, because the mean of its divisors is an integer number (868239864000).

Almost surely, 2^{18850666873539} is an apocalyptic number.

18850666873539 is a deficient number, since it is larger than the sum of its proper divisors (8933008774461).

18850666873539 is a wasteful number, since it uses less digits than its factorization.

18850666873539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041299.

The product of its (nonzero) digits is 1567641600, while the sum is 75.

The spelling of 18850666873539 in words is "eighteen trillion, eight hundred fifty billion, six hundred sixty-six million, eight hundred seventy-three thousand, five hundred thirty-nine".