27853254961 has 4 divisors (see below), whose sum is σ = 31832291392. Its totient is φ = 23874218532.

The previous prime is 27853254929. The next prime is 27853254983. The reversal of 27853254961 is 16945235872.

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 a cyclic number.

It is not a de Polignac number, because 27853254961 - 2⁵ = 27853254929 is a prime.

It is a super-2 number, since 2×27853254961² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27853254899 and 27853254908.

It is not an unprimeable number, because it can be changed into a prime (27853254911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989518205 + ... + 1989518218.

It is an arithmetic number, because the mean of its divisors is an integer number (7958072848).

Almost surely, 2^27853254961 is an apocalyptic number.

It is an amenable number.

27853254961 is a deficient number, since it is larger than the sum of its proper divisors (3979036431).

27853254961 is an equidigital number, since it uses as much as digits as its factorization.

27853254961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979036430.

The product of its digits is 3628800, while the sum is 52.

The spelling of 27853254961 in words is "twenty-seven billion, eight hundred fifty-three million, two hundred fifty-four thousand, nine hundred sixty-one".