9960500591 has 2 divisors, whose sum is σ = 9960500592. Its totient is φ = 9960500590.

The previous prime is 9960500531. The next prime is 9960500609. The reversal of 9960500591 is 1950050699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9960500591 - 2¹⁸ = 9960238447 is a prime.

It is a super-2 number, since 2×9960500591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9960500531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980250295 + 4980250296.

It is an arithmetic number, because the mean of its divisors is an integer number (4980250296).

Almost surely, 2^9960500591 is an apocalyptic number.

9960500591 is a deficient number, since it is larger than the sum of its proper divisors (1).

9960500591 is an equidigital number, since it uses as much as digits as its factorization.

9960500591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 9960500591 is about 99802.3075434631. The cubic root of 9960500591 is about 2151.5943170748.

The spelling of 9960500591 in words is "nine billion, nine hundred sixty million, five hundred thousand, five hundred ninety-one".