27552801609 has 24 divisors (see below), whose sum is σ = 40051702080. Its totient is φ = 18252037152.

The previous prime is 27552801559. The next prime is 27552801637. The reversal of 27552801609 is 90610825572.

27552801609 is a `hidden beast` number, since 2 + 7 + 552 + 80 + 16 + 0 + 9 = 666.

It is not a de Polignac number, because 27552801609 - 2³¹ = 25405317961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27552801709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 899307 + ... + 929439.

It is an arithmetic number, because the mean of its divisors is an integer number (1668820920).

Almost surely, 2^27552801609 is an apocalyptic number.

It is an amenable number.

27552801609 is a deficient number, since it is larger than the sum of its proper divisors (12498900471).

27552801609 is a wasteful number, since it uses less digits than its factorization.

27552801609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30781 (or 30778 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 27552801609 in words is "twenty-seven billion, five hundred fifty-two million, eight hundred one thousand, six hundred nine".