27072158699557 has 2 divisors, whose sum is σ = 27072158699558. Its totient is φ = 27072158699556.

The previous prime is 27072158699519. The next prime is 27072158699569. The reversal of 27072158699557 is 75599685127072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21594246535521 + 5477912164036 = 4646961^2 + 2340494^2 .

It is a cyclic number.

It is not a de Polignac number, because 27072158699557 - 2²³ = 27072150310949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27072158699557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27072158669557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13536079349778 + 13536079349779.

It is an arithmetic number, because the mean of its divisors is an integer number (13536079349779).

Almost surely, 2^{27072158699557} is an apocalyptic number.

It is an amenable number.

27072158699557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27072158699557 is an equidigital number, since it uses as much as digits as its factorization.

27072158699557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792000, while the sum is 73.

The spelling of 27072158699557 in words is "twenty-seven trillion, seventy-two billion, one hundred fifty-eight million, six hundred ninety-nine thousand, five hundred fifty-seven".