27435796081 has 4 divisors (see below), whose sum is σ = 27458341092. Its totient is φ = 27413251072.

The previous prime is 27435796061. The next prime is 27435796093. The reversal of 27435796081 is 18069753472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21584311056 + 5851485025 = 146916^2 + 76495^2 .

It is a cyclic number.

It is not a de Polignac number, because 27435796081 - 2²³ = 27427407473 is a prime.

It is a super-2 number, since 2×27435796081² (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 (27435796051) 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, 11270680 + ... + 11273113.

It is an arithmetic number, because the mean of its divisors is an integer number (6864585273).

It is a 1-persistent number, because it is pandigital, but 2⋅27435796081 = 54871592162 is not.

Almost surely, 2^27435796081 is an apocalyptic number.

It is an amenable number.

27435796081 is a deficient number, since it is larger than the sum of its proper divisors (22545011).

27435796081 is a wasteful number, since it uses less digits than its factorization.

27435796081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22545010.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 27435796081 in words is "twenty-seven billion, four hundred thirty-five million, seven hundred ninety-six thousand, eighty-one".