27800717601 has 4 divisors (see below), whose sum is σ = 37067623472. Its totient is φ = 18533811732.

The previous prime is 27800717591. The next prime is 27800717611. The reversal of 27800717601 is 10671700872.

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 an interprime number because it is at equal distance from previous prime (27800717591) and next prime (27800717611).

It is not a de Polignac number, because 27800717601 - 2⁵ = 27800717569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27800717601.

It is not an unprimeable number, because it can be changed into a prime (27800717611) 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, 4633452931 + ... + 4633452936.

It is an arithmetic number, because the mean of its divisors is an integer number (9266905868).

Almost surely, 2^27800717601 is an apocalyptic number.

It is an amenable number.

27800717601 is a deficient number, since it is larger than the sum of its proper divisors (9266905871).

27800717601 is an equidigital number, since it uses as much as digits as its factorization.

27800717601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9266905870.

The product of its (nonzero) digits is 32928, while the sum is 39.

The spelling of 27800717601 in words is "twenty-seven billion, eight hundred million, seven hundred seventeen thousand, six hundred one".