2447249836181 has 2 divisors, whose sum is σ = 2447249836182. Its totient is φ = 2447249836180.

The previous prime is 2447249836151. The next prime is 2447249836237. The reversal of 2447249836181 is 1816389427442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1999466700625 + 447783135556 = 1414025^2 + 669166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2447249836181 - 2⁶ = 2447249836117 is a prime.

It is a super-2 number, since 2×2447249836181² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2447249836181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447249836151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223624918090 + 1223624918091.

It is an arithmetic number, because the mean of its divisors is an integer number (1223624918091).

Almost surely, 2^{2447249836181} is an apocalyptic number.

It is an amenable number.

2447249836181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447249836181 is an equidigital number, since it uses as much as digits as its factorization.

2447249836181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18579456, while the sum is 59.

The spelling of 2447249836181 in words is "two trillion, four hundred forty-seven billion, two hundred forty-nine million, eight hundred thirty-six thousand, one hundred eighty-one".