27342556081 has 4 divisors (see below), whose sum is σ = 28781638000. Its totient is φ = 25903474164.

The previous prime is 27342556063. The next prime is 27342556091. The reversal of 27342556081 is 18065524372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27342556081 - 2¹¹ = 27342554033 is a prime.

It is a super-2 number, since 2×27342556081² (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 (27342556091) 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, 719540931 + ... + 719540968.

It is an arithmetic number, because the mean of its divisors is an integer number (7195409500).

Almost surely, 2^27342556081 is an apocalyptic number.

It is an amenable number.

27342556081 is a deficient number, since it is larger than the sum of its proper divisors (1439081919).

27342556081 is a wasteful number, since it uses less digits than its factorization.

27342556081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439081918.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 27342556081 in words is "twenty-seven billion, three hundred forty-two million, five hundred fifty-six thousand, eighty-one".