5815606591 has 4 divisors (see below), whose sum is σ = 5816124184. Its totient is φ = 5815089000.

The previous prime is 5815606561. The next prime is 5815606637. The reversal of 5815606591 is 1956065185.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5815606591 - 2¹⁵ = 5815573823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815606561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241560 + ... + 264541.

It is an arithmetic number, because the mean of its divisors is an integer number (1454031046).

Almost surely, 2^5815606591 is an apocalyptic number.

5815606591 is a deficient number, since it is larger than the sum of its proper divisors (517593).

5815606591 is a wasteful number, since it uses less digits than its factorization.

5815606591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517592.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 5815606591 is about 76260.1245147161. The cubic root of 5815606591 is about 1798.3118525375.

The spelling of 5815606591 in words is "five billion, eight hundred fifteen million, six hundred six thousand, five hundred ninety-one".