18487940357360 has 80 divisors (see below), whose sum is σ = 43647468829632. Its totient is φ = 7281385574400.

The previous prime is 18487940357357. The next prime is 18487940357449. The reversal of 18487940357360 is 6375304978481.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149880 + ... + 6449640.

Almost surely, 2^{18487940357360} is an apocalyptic number.

18487940357360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 4299760×4299761.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18487940357360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21823734414816).

18487940357360 is an abundant number, since it is smaller than the sum of its proper divisors (25159528472272).

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

18487940357360 is a wasteful number, since it uses less digits than its factorization.

18487940357360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300602 (or 4300596 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 65.

The spelling of 18487940357360 in words is "eighteen trillion, four hundred eighty-seven billion, nine hundred forty million, three hundred fifty-seven thousand, three hundred sixty".