27982500149 has 2 divisors, whose sum is σ = 27982500150. Its totient is φ = 27982500148.

The previous prime is 27982500137. The next prime is 27982500199. The reversal of 27982500149 is 94100528972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22339786225 + 5642713924 = 149465^2 + 75118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27982500149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27982500199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13991250074 + 13991250075.

It is an arithmetic number, because the mean of its divisors is an integer number (13991250075).

Almost surely, 2^27982500149 is an apocalyptic number.

It is an amenable number.

27982500149 is a deficient number, since it is larger than the sum of its proper divisors (1).

27982500149 is an equidigital number, since it uses as much as digits as its factorization.

27982500149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 27982500149 in words is "twenty-seven billion, nine hundred eighty-two million, five hundred thousand, one hundred forty-nine".