27943391566380 has 48 divisors (see below), whose sum is σ = 78333221613024. Its totient is φ = 7442835348480.

The previous prime is 27943391566289. The next prime is 27943391566381. The reversal of 27943391566380 is 8366519334972.

It is not an unprimeable number, because it can be changed into a prime (27943391566381) by changing a digit.

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, 272940141 + ... + 273042500.

It is an arithmetic number, because the mean of its divisors is an integer number (1631942116938).

It is a 1-persistent number, because it is pandigital, but 2⋅27943391566380 = 55886783132760 is not.

Almost surely, 2^{27943391566380} is an apocalyptic number.

27943391566380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27943391566380 is an abundant number, since it is smaller than the sum of its proper divisors (50389830046644).

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

27943391566380 is a wasteful number, since it uses less digits than its factorization.

27943391566380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545983506 (or 545983504 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 66.

The spelling of 27943391566380 in words is "twenty-seven trillion, nine hundred forty-three billion, three hundred ninety-one million, five hundred sixty-six thousand, three hundred eighty".