27554055987 has 8 divisors (see below), whose sum is σ = 38672359360. Its totient is φ = 17402561640.

The previous prime is 27554055979. The next prime is 27554056031. The reversal of 27554055987 is 78955045572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27554055987 - 2³ = 27554055979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 483404491 = 27554055987 / (2 + 7 + 5 + 5 + 4 + 0 + 5 + 5 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27554055967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241702189 + ... + 241702302.

It is an arithmetic number, because the mean of its divisors is an integer number (4834044920).

Almost surely, 2^27554055987 is an apocalyptic number.

27554055987 is a deficient number, since it is larger than the sum of its proper divisors (11118303373).

27554055987 is a wasteful number, since it uses less digits than its factorization.

27554055987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483404513.

The product of its (nonzero) digits is 17640000, while the sum is 57.

The spelling of 27554055987 in words is "twenty-seven billion, five hundred fifty-four million, fifty-five thousand, nine hundred eighty-seven".