5381586615861 has 24 divisors (see below), whose sum is σ = 7788152526336. Its totient is φ = 3580922214240.

The previous prime is 5381586615841. The next prime is 5381586615931. The reversal of 5381586615861 is 1685166851835.

5381586615861 is a `hidden beast` number, since 5 + 3 + 8 + 1 + 5 + 8 + 6 + 615 + 8 + 6 + 1 = 666.

5381586615861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5381586615861 - 2¹⁰ = 5381586614837 is a prime.

It is a super-2 number, since 2×5381586615861² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5381586615841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11969671 + ... + 12411131.

It is an arithmetic number, because the mean of its divisors is an integer number (324506355264).

Almost surely, 2^{5381586615861} is an apocalyptic number.

It is an amenable number.

5381586615861 is a deficient number, since it is larger than the sum of its proper divisors (2406565910475).

5381586615861 is a wasteful number, since it uses less digits than its factorization.

5381586615861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444033 (or 444030 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 63.

The spelling of 5381586615861 in words is "five trillion, three hundred eighty-one billion, five hundred eighty-six million, six hundred fifteen thousand, eight hundred sixty-one".