8344151561 has 2 divisors, whose sum is σ = 8344151562. Its totient is φ = 8344151560.

The previous prime is 8344151539. The next prime is 8344151567. The reversal of 8344151561 is 1651514438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7293160000 + 1050991561 = 85400^2 + 32419^2 .

It is a cyclic number.

It is not a de Polignac number, because 8344151561 - 2¹⁸ = 8343889417 is a prime.

It is not a weakly prime, because it can be changed into another prime (8344151567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4172075780 + 4172075781.

It is an arithmetic number, because the mean of its divisors is an integer number (4172075781).

Almost surely, 2^8344151561 is an apocalyptic number.

It is an amenable number.

8344151561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8344151561 is an equidigital number, since it uses as much as digits as its factorization.

8344151561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 8344151561 is about 91346.3275725959. The cubic root of 8344151561 is about 2028.2776011035.

Adding to 8344151561 its reverse (1651514438), we get a palindrome (9995665999).

The spelling of 8344151561 in words is "eight billion, three hundred forty-four million, one hundred fifty-one thousand, five hundred sixty-one".