8861512417 has 2 divisors, whose sum is σ = 8861512418. Its totient is φ = 8861512416.

The previous prime is 8861512357. The next prime is 8861512459. The reversal of 8861512417 is 7142151688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6730397521 + 2131114896 = 82039^2 + 46164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8861512417 is a prime.

It is not a weakly prime, because it can be changed into another prime (8861512477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4430756208 + 4430756209.

It is an arithmetic number, because the mean of its divisors is an integer number (4430756209).

Almost surely, 2^8861512417 is an apocalyptic number.

It is an amenable number.

8861512417 is a deficient number, since it is larger than the sum of its proper divisors (1).

8861512417 is an equidigital number, since it uses as much as digits as its factorization.

8861512417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 43.

The square root of 8861512417 is about 94135.6065312164. The cubic root of 8861512417 is about 2069.3595237430.

The spelling of 8861512417 in words is "eight billion, eight hundred sixty-one million, five hundred twelve thousand, four hundred seventeen".