18439774873360 has 80 divisors (see below), whose sum is σ = 44851502891520. Its totient is φ = 7037081131520.

The previous prime is 18439774873313. The next prime is 18439774873367. The reversal of 18439774873360 is 6337847793481.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 18439774873360.

It is not an unprimeable number, because it can be changed into a prime (18439774873367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12165496 + ... + 13597015.

It is an arithmetic number, because the mean of its divisors is an integer number (560643786144).

Almost surely, 2^{18439774873360} is an apocalyptic number.

18439774873360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18439774873360 is an abundant number, since it is smaller than the sum of its proper divisors (26411728018160).

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

18439774873360 is a wasteful number, since it uses less digits than its factorization.

18439774873360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25762936 (or 25762930 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 70.

The spelling of 18439774873360 in words is "eighteen trillion, four hundred thirty-nine billion, seven hundred seventy-four million, eight hundred seventy-three thousand, three hundred sixty".