99717255461 has 2 divisors, whose sum is σ = 99717255462. Its totient is φ = 99717255460.

The previous prime is 99717255433. The next prime is 99717255497. The reversal of 99717255461 is 16455271799.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92425120225 + 7292135236 = 304015^2 + 85394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99717255461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99717255397 and 99717255406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99717255431) 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 as a sum of consecutive naturals, namely, 49858627730 + 49858627731.

It is an arithmetic number, because the mean of its divisors is an integer number (49858627731).

Almost surely, 2^99717255461 is an apocalyptic number.

It is an amenable number.

99717255461 is a deficient number, since it is larger than the sum of its proper divisors (1).

99717255461 is an equidigital number, since it uses as much as digits as its factorization.

99717255461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The spelling of 99717255461 in words is "ninety-nine billion, seven hundred seventeen million, two hundred fifty-five thousand, four hundred sixty-one".