27239378011 has 4 divisors (see below), whose sum is σ = 27412877392. Its totient is φ = 27065878632.

The previous prime is 27239377969. The next prime is 27239378051. The reversal of 27239378011 is 11087393272.

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 27239378011 - 2¹⁹ = 27238853723 is a prime.

It is a super-2 number, since 2×27239378011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27239378051) 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, 86749455 + ... + 86749768.

It is an arithmetic number, because the mean of its divisors is an integer number (6853219348).

Almost surely, 2^27239378011 is an apocalyptic number.

27239378011 is a deficient number, since it is larger than the sum of its proper divisors (173499381).

27239378011 is a wasteful number, since it uses less digits than its factorization.

27239378011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173499380.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 27239378011 in words is "twenty-seven billion, two hundred thirty-nine million, three hundred seventy-eight thousand, eleven".