18427415447880 has 256 divisors, whose sum is σ = 62050817664000. Its totient is φ = 4863980565504.

The previous prime is 18427415447869. The next prime is 18427415447891. The reversal of 18427415447880 is 8874451472481.

18427415447880 is a `hidden beast` number, since 1 + 8 + 4 + 2 + 7 + 4 + 1 + 544 + 7 + 8 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (18427415447869) and next prime (18427415447891).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117288337 + ... + 117445343.

It is an arithmetic number, because the mean of its divisors is an integer number (242386006500).

Almost surely, 2^{18427415447880} is an apocalyptic number.

18427415447880 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 18427415447880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31025408832000).

18427415447880 is an abundant number, since it is smaller than the sum of its proper divisors (43623402216120).

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

18427415447880 is a wasteful number, since it uses less digits than its factorization.

18427415447880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158133 (or 158123 counting only the distinct ones).

The product of its (nonzero) digits is 64225280, while the sum is 63.

The spelling of 18427415447880 in words is "eighteen trillion, four hundred twenty-seven billion, four hundred fifteen million, four hundred forty-seven thousand, eight hundred eighty".