5209480371181 has 2 divisors, whose sum is σ = 5209480371182. Its totient is φ = 5209480371180.

The previous prime is 5209480371157. The next prime is 5209480371217. The reversal of 5209480371181 is 1811730849025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4450133697156 + 759346674025 = 2109534^2 + 871405^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209480371181 - 2⁵ = 5209480371149 is a prime.

It is a super-2 number, since 2×5209480371181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5209480371101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604740185590 + 2604740185591.

It is an arithmetic number, because the mean of its divisors is an integer number (2604740185591).

Almost surely, 2^{5209480371181} is an apocalyptic number.

It is an amenable number.

5209480371181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209480371181 is an equidigital number, since it uses as much as digits as its factorization.

5209480371181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 5209480371181 in words is "five trillion, two hundred nine billion, four hundred eighty million, three hundred seventy-one thousand, one hundred eighty-one".