27948499049897 has 2 divisors, whose sum is σ = 27948499049898. Its totient is φ = 27948499049896.

The previous prime is 27948499049873. The next prime is 27948499049983. The reversal of 27948499049897 is 79894099484972.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27927039436816 + 21459613081 = 5284604^2 + 146491^2 .

It is a cyclic number.

It is not a de Polignac number, because 27948499049897 - 2¹⁶ = 27948498984361 is a prime.

It is a super-2 number, since 2×27948499049897² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27948499040897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13974249524948 + 13974249524949.

It is an arithmetic number, because the mean of its divisors is an integer number (13974249524949).

Almost surely, 2^{27948499049897} is an apocalyptic number.

It is an amenable number.

27948499049897 is a deficient number, since it is larger than the sum of its proper divisors (1).

27948499049897 is an equidigital number, since it uses as much as digits as its factorization.

27948499049897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23702740992, while the sum is 89.

The spelling of 27948499049897 in words is "twenty-seven trillion, nine hundred forty-eight billion, four hundred ninety-nine million, forty-nine thousand, eight hundred ninety-seven".