27775555553 has 16 divisors (see below), whose sum is σ = 30426886656. Its totient is φ = 25241099520.

The previous prime is 27775555541. The next prime is 27775555589. The reversal of 27775555553 is 35555557772.

It is a happy number.

It is not a de Polignac number, because 27775555553 - 2³⁴ = 10595686369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27775555523) 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, 173975 + ... + 292947.

It is an arithmetic number, because the mean of its divisors is an integer number (1901680416).

Almost surely, 2^27775555553 is an apocalyptic number.

It is an amenable number.

27775555553 is a deficient number, since it is larger than the sum of its proper divisors (2651331103).

27775555553 is a wasteful number, since it uses less digits than its factorization.

27775555553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119464.

The product of its digits is 32156250, while the sum is 56.

The spelling of 27775555553 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred fifty-five thousand, five hundred fifty-three".