5861005815861 has 36 divisors (see below), whose sum is σ = 9850416439500. Its totient is φ = 3348353167488.

The previous prime is 5861005815857. The next prime is 5861005815869. The reversal of 5861005815861 is 1685185001685.

5861005815861 is a `hidden beast` number, since 5 + 8 + 6 + 1 + 0 + 0 + 58 + 1 + 586 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3651118424100 + 2209887391761 = 1910790^2 + 1486569^2 .

It is not a de Polignac number, because 5861005815861 - 2² = 5861005815857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5861005815798 and 5861005815807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5861005815869) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 293665 + ... + 3436313.

It is an arithmetic number, because the mean of its divisors is an integer number (273622678875).

Almost surely, 2^{5861005815861} is an apocalyptic number.

It is an amenable number.

5861005815861 is a deficient number, since it is larger than the sum of its proper divisors (3989410623639).

5861005815861 is a wasteful number, since it uses less digits than its factorization.

5861005815861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146898 (or 3146888 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 5861005815861 in words is "five trillion, eight hundred sixty-one billion, five million, eight hundred fifteen thousand, eight hundred sixty-one".