18266747412480 has 896 divisors, whose sum is σ = 69755406336000. Its totient is φ = 4077752942592.

The previous prime is 18266747412449. The next prime is 18266747412553. The reversal of 18266747412480 is 8421474766281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (896).

It is a super-2 number, since 2×18266747412480² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 1812352081 + ... + 1812362159.

It is an arithmetic number, because the mean of its divisors is an integer number (77852016000).

Almost surely, 2^{18266747412480} is an apocalyptic number.

18266747412480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18266747412480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34877703168000).

18266747412480 is an abundant number, since it is smaller than the sum of its proper divisors (51488658923520).

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

18266747412480 is an equidigital number, since it uses as much as digits as its factorization.

18266747412480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10177 (or 10139 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 18266747412480 in words is "eighteen trillion, two hundred sixty-six billion, seven hundred forty-seven million, four hundred twelve thousand, four hundred eighty".