27178742371128 has 32 divisors (see below), whose sum is σ = 67950250569600. Its totient is φ = 9059128171488.

The previous prime is 27178742371111. The next prime is 27178742371141. The reversal of 27178742371128 is 82117324787172.

It is a super-2 number, since 2×27178742371128² (a number of 28 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 27798118 + ... + 28759221.

It is an arithmetic number, because the mean of its divisors is an integer number (2123445330300).

Almost surely, 2^{27178742371128} is an apocalyptic number.

It is an amenable number.

27178742371128 is an abundant number, since it is smaller than the sum of its proper divisors (40771508198472).

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

27178742371128 is a wasteful number, since it uses less digits than its factorization.

27178742371128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56577371 (or 56577367 counting only the distinct ones).

The product of its digits is 14751744, while the sum is 60.

The spelling of 27178742371128 in words is "twenty-seven trillion, one hundred seventy-eight billion, seven hundred forty-two million, three hundred seventy-one thousand, one hundred twenty-eight".