18581865040362 has 128 divisors (see below), whose sum is σ = 42297859473408. Its totient is φ = 5401819008000.

The previous prime is 18581865040351. The next prime is 18581865040411. The reversal of 18581865040362 is 26304056818581.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45368173 + ... + 45775919.

It is an arithmetic number, because the mean of its divisors is an integer number (330452027136).

Almost surely, 2^{18581865040362} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18581865040362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21148929736704).

18581865040362 is an abundant number, since it is smaller than the sum of its proper divisors (23715994433046).

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

18581865040362 is a wasteful number, since it uses less digits than its factorization.

18581865040362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408244.

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 18581865040362 in words is "eighteen trillion, five hundred eighty-one billion, eight hundred sixty-five million, forty thousand, three hundred sixty-two".