18642555148426 has 24 divisors (see below), whose sum is σ = 30737328172992. Its totient is φ = 8473827285000.

The previous prime is 18642555148417. The next prime is 18642555148429. The reversal of 18642555148426 is 62484155524681.

It is not an unprimeable number, because it can be changed into a prime (18642555148429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60128301 + ... + 60437551.

It is an arithmetic number, because the mean of its divisors is an integer number (1280722007208).

Almost surely, 2^{18642555148426} is an apocalyptic number.

18642555148426 is a deficient number, since it is larger than the sum of its proper divisors (12094773024566).

18642555148426 is a wasteful number, since it uses less digits than its factorization.

18642555148426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558378 (or 558367 counting only the distinct ones).

The product of its digits is 73728000, while the sum is 61.

The spelling of 18642555148426 in words is "eighteen trillion, six hundred forty-two billion, five hundred fifty-five million, one hundred forty-eight thousand, four hundred twenty-six".