27778555255 has 16 divisors (see below), whose sum is σ = 36368984448. Its totient is φ = 20200180000.

The previous prime is 27778555253. The next prime is 27778555267. The reversal of 27778555255 is 55255587772.

It is not a de Polignac number, because 27778555255 - 2¹ = 27778555253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27778555255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27778555253) 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, 529980 + ... + 580030.

It is an arithmetic number, because the mean of its divisors is an integer number (2273061528).

Almost surely, 2^27778555255 is an apocalyptic number.

27778555255 is a deficient number, since it is larger than the sum of its proper divisors (8590429193).

27778555255 is a wasteful number, since it uses less digits than its factorization.

27778555255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60158.

The product of its digits is 34300000, while the sum is 58.

The spelling of 27778555255 in words is "twenty-seven billion, seven hundred seventy-eight million, five hundred fifty-five thousand, two hundred fifty-five".