18336867235540 has 24 divisors (see below), whose sum is σ = 44008481365632. Its totient is φ = 6286925909280.

The previous prime is 18336867235537. The next prime is 18336867235541. The reversal of 18336867235540 is 4553276863381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18336867235541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65488811416 + ... + 65488811695.

It is an arithmetic number, because the mean of its divisors is an integer number (1833686723568).

Almost surely, 2^{18336867235540} is an apocalyptic number.

18336867235540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18336867235540 is an abundant number, since it is smaller than the sum of its proper divisors (25671614130092).

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

18336867235540 is a wasteful number, since it uses less digits than its factorization.

18336867235540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130977623127 (or 130977623125 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 61.

The spelling of 18336867235540 in words is "eighteen trillion, three hundred thirty-six billion, eight hundred sixty-seven million, two hundred thirty-five thousand, five hundred forty".