27319461797 has 4 divisors (see below), whose sum is σ = 27436712940. Its totient is φ = 27202210656.

The previous prime is 27319461781. The next prime is 27319461833. The reversal of 27319461797 is 79716491372.

It is a happy number.

It is a Cunningham number, because it is equal to 165286²+1.

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 5548164196 + 21771297601 = 74486^2 + 147551^2 .

It is a cyclic number.

It is not a de Polignac number, because 27319461797 - 2⁴ = 27319461781 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 (27319461497) 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, 58625222 + ... + 58625687.

It is an arithmetic number, because the mean of its divisors is an integer number (6859178235).

Almost surely, 2^27319461797 is an apocalyptic number.

It is an amenable number.

27319461797 is a deficient number, since it is larger than the sum of its proper divisors (117251143).

27319461797 is a wasteful number, since it uses less digits than its factorization.

27319461797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117251142.

The product of its digits is 4000752, while the sum is 56.

The spelling of 27319461797 in words is "twenty-seven billion, three hundred nineteen million, four hundred sixty-one thousand, seven hundred ninety-seven".