18557382094640 has 40 divisors (see below), whose sum is σ = 43549146225360. Its totient is φ = 7353579443456.

The previous prime is 18557382094619. The next prime is 18557382094679. The reversal of 18557382094640 is 4649028375581.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083950675 + ... + 1083967794.

It is an arithmetic number, because the mean of its divisors is an integer number (1088728655634).

It is a 1-persistent number, because it is pandigital, but 2⋅18557382094640 = 37114764189280 is not.

Almost surely, 2^{18557382094640} is an apocalyptic number.

18557382094640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18557382094640 is an abundant number, since it is smaller than the sum of its proper divisors (24991764130720).

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

18557382094640 is a wasteful number, since it uses less digits than its factorization.

18557382094640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167918589 (or 2167918583 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 18557382094640 in words is "eighteen trillion, five hundred fifty-seven billion, three hundred eighty-two million, ninety-four thousand, six hundred forty".