27661548355 has 96 divisors (see below), whose sum is σ = 41374065600. Its totient is φ = 17667320832.

The previous prime is 27661548353. The next prime is 27661548359. The reversal of 27661548355 is 55384516672.

It is not a de Polignac number, because 27661548355 - 2¹ = 27661548353 is a prime.

It is a super-2 number, since 2×27661548355² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27661548353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36540637 + ... + 36541393.

It is an arithmetic number, because the mean of its divisors is an integer number (430979850).

Almost surely, 2^27661548355 is an apocalyptic number.

27661548355 is a deficient number, since it is larger than the sum of its proper divisors (13712517245).

27661548355 is a wasteful number, since it uses less digits than its factorization.

27661548355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 974 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 52.

The spelling of 27661548355 in words is "twenty-seven billion, six hundred sixty-one million, five hundred forty-eight thousand, three hundred fifty-five".