27148779841 has 2 divisors, whose sum is σ = 27148779842. Its totient is φ = 27148779840.

The previous prime is 27148779787. The next prime is 27148779871. The reversal of 27148779841 is 14897784172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25818062400 + 1330717441 = 160680^2 + 36479^2 .

It is a cyclic number.

It is not a de Polignac number, because 27148779841 - 2²⁵ = 27115225409 is a prime.

It is a super-3 number, since 3×27148779841³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (27148779871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13574389920 + 13574389921.

It is an arithmetic number, because the mean of its divisors is an integer number (13574389921).

Almost surely, 2^27148779841 is an apocalyptic number.

It is an amenable number.

27148779841 is a deficient number, since it is larger than the sum of its proper divisors (1).

27148779841 is an equidigital number, since it uses as much as digits as its factorization.

27148779841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 58.

The spelling of 27148779841 in words is "twenty-seven billion, one hundred forty-eight million, seven hundred seventy-nine thousand, eight hundred forty-one".