5481540530361 has 75 divisors (see below), whose sum is σ = 9554451076511. Its totient is φ = 3131718874704.

The previous prime is 5481540530233. The next prime is 5481540530371. The reversal of 5481540530361 is 1630350451845.

The square root of 5481540530361 is 2341269.

It is a perfect power (a square), and thus also a powerful number.

5481540530361 is a `hidden beast` number, since 5 + 4 + 8 + 1 + 54 + 0 + 530 + 3 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18569240361 + 5462971290000 = 136269^2 + 2337300^2 .

It is not a de Polignac number, because 5481540530361 - 2⁷ = 5481540530233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5481540530371) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 1032496975 + ... + 1032502283.

Almost surely, 2^{5481540530361} is an apocalyptic number.

5481540530361 is the 2341269-th square number.

5481540530361 is the 1170635-th centered octagonal number.

It is an amenable number.

5481540530361 is a deficient number, since it is larger than the sum of its proper divisors (4072910546150).

5481540530361 is an frugal number, since it uses more digits than its factorization.

5481540530361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658 (or 5319 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 5481540530361 in words is "five trillion, four hundred eighty-one billion, five hundred forty million, five hundred thirty thousand, three hundred sixty-one".