18887047458048 has 864 divisors, whose sum is σ = 70544144885760. Its totient is φ = 4896227450880.

The previous prime is 18887047458031. The next prime is 18887047458073. The reversal of 18887047458048 is 84085474078881.

18887047458048 is a `hidden beast` number, since 1 + 8 + 8 + 8 + 70 + 474 + 5 + 80 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 2668035373 + ... + 2668042451.

It is an arithmetic number, because the mean of its divisors is an integer number (81648315840).

Almost surely, 2^{18887047458048} is an apocalyptic number.

18887047458048 is a gapful number since it is divisible by the number (18) 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 18887047458048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35272072442880).

18887047458048 is an abundant number, since it is smaller than the sum of its proper divisors (51657097427712).

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

18887047458048 is an equidigital number, since it uses as much as digits as its factorization.

18887047458048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7685 (or 7659 counting only the distinct ones).

The product of its (nonzero) digits is 513802240, while the sum is 72.

The spelling of 18887047458048 in words is "eighteen trillion, eight hundred eighty-seven billion, forty-seven million, four hundred fifty-eight thousand, forty-eight".