27381466487880 has 64 divisors (see below), whose sum is σ = 91271554963200. Its totient is φ = 7301724396480.

The previous prime is 27381466487857. The next prime is 27381466487897. The reversal of 27381466487880 is 8878466418372.

27381466487880 is a `hidden beast` number, since 2 + 7 + 3 + 8 + 1 + 4 + 66 + 487 + 8 + 80 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 27381466487799 and 27381466487808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12676603776 + ... + 12676605935.

It is an arithmetic number, because the mean of its divisors is an integer number (1426118046300).

Almost surely, 2^{27381466487880} is an apocalyptic number.

27381466487880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27381466487880 is an abundant number, since it is smaller than the sum of its proper divisors (63890088475320).

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

27381466487880 is a wasteful number, since it uses less digits than its factorization.

27381466487880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25353209731 (or 25353209721 counting only the distinct ones).

The product of its (nonzero) digits is 693633024, while the sum is 72.

The spelling of 27381466487880 in words is "twenty-seven trillion, three hundred eighty-one billion, four hundred sixty-six million, four hundred eighty-seven thousand, eight hundred eighty".