109262500561 has 2 divisors, whose sum is σ = 109262500562. Its totient is φ = 109262500560.

The previous prime is 109262500553. The next prime is 109262500591. The reversal of 109262500561 is 165005262901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104567510161 + 4694990400 = 323369^2 + 68520^2 .

It is an emirp because it is prime and its reverse (165005262901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109262500561 - 2³ = 109262500553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109262500561.

It is not a weakly prime, because it can be changed into another prime (109262500511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54631250280 + 54631250281.

It is an arithmetic number, because the mean of its divisors is an integer number (54631250281).

Almost surely, 2^109262500561 is an apocalyptic number.

It is an amenable number.

109262500561 is a deficient number, since it is larger than the sum of its proper divisors (1).

109262500561 is an equidigital number, since it uses as much as digits as its factorization.

109262500561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 109262500561 in words is "one hundred nine billion, two hundred sixty-two million, five hundred thousand, five hundred sixty-one".