27012723871572 has 18 divisors (see below), whose sum is σ = 68282163119898. Its totient is φ = 9004241290512.

The previous prime is 27012723871571. The next prime is 27012723871607. The reversal of 27012723871572 is 27517832721072.

27012723871572 is a `hidden beast` number, since 2 + 70 + 127 + 2 + 387 + 1 + 5 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18069011586756 + 8943712284816 = 4250766^2 + 2990604^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27012723871571) 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 5 ways as a sum of consecutive naturals, for example, 375176720403 + ... + 375176720474.

It is an arithmetic number, because the mean of its divisors is an integer number (3793453506661).

Almost surely, 2^{27012723871572} is an apocalyptic number.

It is an amenable number.

27012723871572 is an abundant number, since it is smaller than the sum of its proper divisors (41269439248326).

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

27012723871572 is a wasteful number, since it uses less digits than its factorization.

27012723871572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750353440887 (or 750353440882 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 54.

The spelling of 27012723871572 in words is "twenty-seven trillion, twelve billion, seven hundred twenty-three million, eight hundred seventy-one thousand, five hundred seventy-two".