8929895716561 has 2 divisors, whose sum is σ = 8929895716562. Its totient is φ = 8929895716560.

The previous prime is 8929895716531. The next prime is 8929895716571. The reversal of 8929895716561 is 1656175989298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8865744451600 + 64151264961 = 2977540^2 + 253281^2 .

It is a cyclic number.

It is not a de Polignac number, because 8929895716561 - 2¹³ = 8929895708369 is a prime.

It is not a weakly prime, because it can be changed into another prime (8929895716531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4464947858280 + 4464947858281.

It is an arithmetic number, because the mean of its divisors is an integer number (4464947858281).

Almost surely, 2^{8929895716561} is an apocalyptic number.

It is an amenable number.

8929895716561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8929895716561 is an equidigital number, since it uses as much as digits as its factorization.

8929895716561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 587865600, while the sum is 76.

The spelling of 8929895716561 in words is "eight trillion, nine hundred twenty-nine billion, eight hundred ninety-five million, seven hundred sixteen thousand, five hundred sixty-one".