27725597877 has 4 divisors (see below), whose sum is σ = 36967463840. Its totient is φ = 18483731916.

The previous prime is 27725597873. The next prime is 27725597923. The reversal of 27725597877 is 77879552772.

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 not a de Polignac number, because 27725597877 - 2² = 27725597873 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 (27725597873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4620932977 + ... + 4620932982.

It is an arithmetic number, because the mean of its divisors is an integer number (9241865960).

Almost surely, 2^27725597877 is an apocalyptic number.

It is an amenable number.

27725597877 is a deficient number, since it is larger than the sum of its proper divisors (9241865963).

27725597877 is an equidigital number, since it uses as much as digits as its factorization.

27725597877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9241865962.

The product of its digits is 121010400, while the sum is 66.

The spelling of 27725597877 in words is "twenty-seven billion, seven hundred twenty-five million, five hundred ninety-seven thousand, eight hundred seventy-seven".