27115025515557 has 16 divisors (see below), whose sum is σ = 41841148477440. Its totient is φ = 15298169910192.

The previous prime is 27115025515499. The next prime is 27115025515637. The reversal of 27115025515557 is 75551552051172.

It is not a de Polignac number, because 27115025515557 - 2⁷ = 27115025515429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27115025513557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8172097653 + ... + 8172100970.

It is an arithmetic number, because the mean of its divisors is an integer number (2615071779840).

Almost surely, 2^{27115025515557} is an apocalyptic number.

It is an amenable number.

27115025515557 is a deficient number, since it is larger than the sum of its proper divisors (14726122961883).

27115025515557 is a wasteful number, since it uses less digits than its factorization.

27115025515557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16344198712.

The product of its (nonzero) digits is 3062500, while the sum is 51.

The spelling of 27115025515557 in words is "twenty-seven trillion, one hundred fifteen billion, twenty-five million, five hundred fifteen thousand, five hundred fifty-seven".