9915150857 has 2 divisors, whose sum is σ = 9915150858. Its totient is φ = 9915150856.

The previous prime is 9915150853. The next prime is 9915150863. The reversal of 9915150857 is 7580515199.

9915150857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5023407376 + 4891743481 = 70876^2 + 69941^2 .

It is a cyclic number.

It is not a de Polignac number, because 9915150857 - 2² = 9915150853 is a prime.

It is not a weakly prime, because it can be changed into another prime (9915150853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4957575428 + 4957575429.

It is an arithmetic number, because the mean of its divisors is an integer number (4957575429).

Almost surely, 2^9915150857 is an apocalyptic number.

It is an amenable number.

9915150857 is a deficient number, since it is larger than the sum of its proper divisors (1).

9915150857 is an equidigital number, since it uses as much as digits as its factorization.

9915150857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 50.

The square root of 9915150857 is about 99574.8505246179. The cubic root of 9915150857 is about 2148.3239764416.

The spelling of 9915150857 in words is "nine billion, nine hundred fifteen million, one hundred fifty thousand, eight hundred fifty-seven".