27388616653 has 16 divisors (see below), whose sum is σ = 29261007360. Its totient is φ = 25578907200.

The previous prime is 27388616621. The next prime is 27388616659. The reversal of 27388616653 is 35661688372.

It is a cyclic number.

It is not a de Polignac number, because 27388616653 - 2⁵ = 27388616621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27388616594 and 27388616603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27388616659) 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, 2269351 + ... + 2281387.

It is an arithmetic number, because the mean of its divisors is an integer number (1828812960).

Almost surely, 2^27388616653 is an apocalyptic number.

It is an amenable number.

27388616653 is a deficient number, since it is larger than the sum of its proper divisors (1872390707).

27388616653 is a wasteful number, since it uses less digits than its factorization.

27388616653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14628.

The product of its digits is 8709120, while the sum is 55.

The spelling of 27388616653 in words is "twenty-seven billion, three hundred eighty-eight million, six hundred sixteen thousand, six hundred fifty-three".