130555865817 has 24 divisors (see below), whose sum is σ = 205180599624. Its totient is φ = 79513795584.

The previous prime is 130555865801. The next prime is 130555865831. The reversal of 130555865817 is 718568555031.

130555865817 is a `hidden beast` number, since 1 + 3 + 0 + 5 + 5 + 58 + 6 + 581 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1792590921 + 128763274896 = 42339^2 + 358836^2 .

It is not a de Polignac number, because 130555865817 - 2⁴ = 130555865801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130555865857) 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, 5740518 + ... + 5763215.

It is an arithmetic number, because the mean of its divisors is an integer number (8549191651).

Almost surely, 2^130555865817 is an apocalyptic number.

It is an amenable number.

130555865817 is a deficient number, since it is larger than the sum of its proper divisors (74624733807).

130555865817 is a wasteful number, since it uses less digits than its factorization.

130555865817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503849 (or 11503846 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 54.

The spelling of 130555865817 in words is "one hundred thirty billion, five hundred fifty-five million, eight hundred sixty-five thousand, eight hundred seventeen".