27825773971 has 2 divisors, whose sum is σ = 27825773972. Its totient is φ = 27825773970.

The previous prime is 27825773947. The next prime is 27825773977. The reversal of 27825773971 is 17937752872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27825773971 - 2¹¹ = 27825771923 is a prime.

It is a super-2 number, since 2×27825773971² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27825773977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13912886985 + 13912886986.

It is an arithmetic number, because the mean of its divisors is an integer number (13912886986).

Almost surely, 2^27825773971 is an apocalyptic number.

27825773971 is a deficient number, since it is larger than the sum of its proper divisors (1).

27825773971 is an equidigital number, since it uses as much as digits as its factorization.

27825773971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 58.

The spelling of 27825773971 in words is "twenty-seven billion, eight hundred twenty-five million, seven hundred seventy-three thousand, nine hundred seventy-one".