27687938378422 has 16 divisors (see below), whose sum is σ = 47485175179680. Its totient is φ = 11861224815168.

The previous prime is 27687938378417. The next prime is 27687938378423. The reversal of 27687938378422 is 22487383978672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27687938378423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419506647 + ... + 419572642.

It is an arithmetic number, because the mean of its divisors is an integer number (2967823448730).

Almost surely, 2^{27687938378422} is an apocalyptic number.

27687938378422 is a deficient number, since it is larger than the sum of its proper divisors (19797236801258).

27687938378422 is a wasteful number, since it uses less digits than its factorization.

27687938378422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839081655.

The product of its digits is 2731180032, while the sum is 76.

The spelling of 27687938378422 in words is "twenty-seven trillion, six hundred eighty-seven billion, nine hundred thirty-eight million, three hundred seventy-eight thousand, four hundred twenty-two".