9996101581 has 2 divisors, whose sum is σ = 9996101582. Its totient is φ = 9996101580.

The previous prime is 9996101567. The next prime is 9996101617. The reversal of 9996101581 is 1851016999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8754596356 + 1241505225 = 93566^2 + 35235^2 .

It is a cyclic number.

It is not a de Polignac number, because 9996101581 - 2⁹ = 9996101069 is a prime.

It is a super-2 number, since 2×9996101581² (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 (9996101501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998050790 + 4998050791.

It is an arithmetic number, because the mean of its divisors is an integer number (4998050791).

Almost surely, 2^9996101581 is an apocalyptic number.

It is an amenable number.

9996101581 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996101581 is an equidigital number, since it uses as much as digits as its factorization.

9996101581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 49.

The square root of 9996101581 is about 99980.5060049208. The cubic root of 9996101581 is about 2154.1546906726.

The spelling of 9996101581 in words is "nine billion, nine hundred ninety-six million, one hundred one thousand, five hundred eighty-one".