109576072561 has 2 divisors, whose sum is σ = 109576072562. Its totient is φ = 109576072560.

The previous prime is 109576072519. The next prime is 109576072577. The reversal of 109576072561 is 165270675901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77635234161 + 31940838400 = 278631^2 + 178720^2 .

It is a cyclic number.

It is not a de Polignac number, because 109576072561 - 2³¹ = 107428588913 is a prime.

It is not a weakly prime, because it can be changed into another prime (109576072261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54788036280 + 54788036281.

It is an arithmetic number, because the mean of its divisors is an integer number (54788036281).

Almost surely, 2^109576072561 is an apocalyptic number.

It is an amenable number.

109576072561 is a deficient number, since it is larger than the sum of its proper divisors (1).

109576072561 is an equidigital number, since it uses as much as digits as its factorization.

109576072561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 49.

The spelling of 109576072561 in words is "one hundred nine billion, five hundred seventy-six million, seventy-two thousand, five hundred sixty-one".