27561114855643 has 4 divisors (see below), whose sum is σ = 27562554774208. Its totient is φ = 27559674937080.

The previous prime is 27561114855623. The next prime is 27561114855653. The reversal of 27561114855643 is 34655841116572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27561114855643 - 2¹⁷ = 27561114724571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27561114855623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719930571 + ... + 719968852.

It is an arithmetic number, because the mean of its divisors is an integer number (6890638693552).

Almost surely, 2^{27561114855643} is an apocalyptic number.

27561114855643 is a deficient number, since it is larger than the sum of its proper divisors (1439918565).

27561114855643 is a wasteful number, since it uses less digits than its factorization.

27561114855643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439918564.

The product of its digits is 24192000, while the sum is 58.

The spelling of 27561114855643 in words is "twenty-seven trillion, five hundred sixty-one billion, one hundred fourteen million, eight hundred fifty-five thousand, six hundred forty-three".