27609137268 has 12 divisors (see below), whose sum is σ = 64421320320. Its totient is φ = 9203045752.

The previous prime is 27609137267. The next prime is 27609137327. The reversal of 27609137268 is 86273190672.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 27609137268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27609137267) 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, 1150380708 + ... + 1150380731.

It is an arithmetic number, because the mean of its divisors is an integer number (5368443360).

Almost surely, 2^27609137268 is an apocalyptic number.

It is an amenable number.

27609137268 is an abundant number, since it is smaller than the sum of its proper divisors (36812183052).

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

27609137268 is a wasteful number, since it uses less digits than its factorization.

27609137268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300761446 (or 2300761444 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 27609137268 in words is "twenty-seven billion, six hundred nine million, one hundred thirty-seven thousand, two hundred sixty-eight".