27391009433742 has 48 divisors (see below), whose sum is σ = 59384990398032. Its totient is φ = 9124521436800.

The previous prime is 27391009433741. The next prime is 27391009433791. The reversal of 27391009433742 is 24733490019372.

27391009433742 is a `hidden beast` number, since 2 + 7 + 39 + 100 + 9 + 433 + 74 + 2 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27391009433741) 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 23 ways as a sum of consecutive naturals, for example, 515646568 + ... + 515699684.

It is an arithmetic number, because the mean of its divisors is an integer number (1237187299959).

Almost surely, 2^{27391009433742} is an apocalyptic number.

27391009433742 is an abundant number, since it is smaller than the sum of its proper divisors (31993980964290).

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

27391009433742 is a wasteful number, since it uses less digits than its factorization.

27391009433742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70833 (or 70830 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 27391009433742 in words is "twenty-seven trillion, three hundred ninety-one billion, nine million, four hundred thirty-three thousand, seven hundred forty-two".