27349923961 has 4 divisors (see below), whose sum is σ = 27395431924. Its totient is φ = 27304416000.

The previous prime is 27349923959. The next prime is 27349923971. The reversal of 27349923961 is 16932994372.

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 8608313961 + 18741610000 = 92781^2 + 136900^2 .

It is a cyclic number.

It is not a de Polignac number, because 27349923961 - 2¹ = 27349923959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27349923911) 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, 22753080 + ... + 22754281.

It is an arithmetic number, because the mean of its divisors is an integer number (6848857981).

Almost surely, 2^27349923961 is an apocalyptic number.

It is an amenable number.

27349923961 is a deficient number, since it is larger than the sum of its proper divisors (45507963).

27349923961 is an equidigital number, since it uses as much as digits as its factorization.

27349923961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45507962.

The product of its digits is 4408992, while the sum is 55.

The spelling of 27349923961 in words is "twenty-seven billion, three hundred forty-nine million, nine hundred twenty-three thousand, nine hundred sixty-one".