27655754551 has 4 divisors (see below), whose sum is σ = 29111320600. Its totient is φ = 26200188504.

The previous prime is 27655754543. The next prime is 27655754573. The reversal of 27655754551 is 15545755672.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27655754551 - 2³ = 27655754543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27655754501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727782996 + ... + 727783033.

It is an arithmetic number, because the mean of its divisors is an integer number (7277830150).

Almost surely, 2^27655754551 is an apocalyptic number.

27655754551 is a deficient number, since it is larger than the sum of its proper divisors (1455566049).

27655754551 is a wasteful number, since it uses less digits than its factorization.

27655754551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455566048.

The product of its digits is 7350000, while the sum is 52.

The spelling of 27655754551 in words is "twenty-seven billion, six hundred fifty-five million, seven hundred fifty-four thousand, five hundred fifty-one".