58561320861 has 6 divisors (see below), whose sum is σ = 84588574590. Its totient is φ = 39040880568.

The previous prime is 58561320847. The next prime is 58561320893. The reversal of 58561320861 is 16802316585.

58561320861 is a `hidden beast` number, since 5 + 8 + 5 + 613 + 20 + 8 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36837508761 + 21723812100 = 191931^2 + 147390^2 .

It is not a de Polignac number, because 58561320861 - 2¹⁹ = 58560796573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58561320821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3253406706 + ... + 3253406723.

It is an arithmetic number, because the mean of its divisors is an integer number (14098095765).

Almost surely, 2^58561320861 is an apocalyptic number.

It is an amenable number.

58561320861 is a deficient number, since it is larger than the sum of its proper divisors (26027253729).

58561320861 is a wasteful number, since it uses less digits than its factorization.

58561320861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506813435 (or 6506813432 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 58561320861 in words is "fifty-eight billion, five hundred sixty-one million, three hundred twenty thousand, eight hundred sixty-one".