27066435551 has 4 divisors (see below), whose sum is σ = 27264000912. Its totient is φ = 26868870192.

The previous prime is 27066435511. The next prime is 27066435553. The reversal of 27066435551 is 15553466072.

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 27066435551 - 2¹⁴ = 27066419167 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 (27066435553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98782475 + ... + 98782748.

It is an arithmetic number, because the mean of its divisors is an integer number (6816000228).

Almost surely, 2^27066435551 is an apocalyptic number.

27066435551 is a deficient number, since it is larger than the sum of its proper divisors (197565361).

27066435551 is a wasteful number, since it uses less digits than its factorization.

27066435551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197565360.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 27066435551 in words is "twenty-seven billion, sixty-six million, four hundred thirty-five thousand, five hundred fifty-one".