8876315561 has 2 divisors, whose sum is σ = 8876315562. Its totient is φ = 8876315560.

The previous prime is 8876315531. The next prime is 8876315611. The reversal of 8876315561 is 1655136788.

8876315561 = 66619² + 66620².

It is a happy number.

It is an a-pointer prime, because the next prime (8876315611) can be obtained adding 8876315561 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4438224400 + 4438091161 = 66620^2 + 66619^2 .

It is a cyclic number.

It is not a de Polignac number, because 8876315561 - 2¹⁴ = 8876299177 is a prime.

It is not a weakly prime, because it can be changed into another prime (8876315501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4438157780 + 4438157781.

It is an arithmetic number, because the mean of its divisors is an integer number (4438157781).

Almost surely, 2^8876315561 is an apocalyptic number.

8876315561 is the 66620-th centered square number.

It is an amenable number.

8876315561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8876315561 is an equidigital number, since it uses as much as digits as its factorization.

8876315561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 8876315561 is about 94214.2004211679. The cubic root of 8876315561 is about 2070.5111700954.

The spelling of 8876315561 in words is "eight billion, eight hundred seventy-six million, three hundred fifteen thousand, five hundred sixty-one".