109251842761 has 2 divisors, whose sum is σ = 109251842762. Its totient is φ = 109251842760.

The previous prime is 109251842683. The next prime is 109251842803. The reversal of 109251842761 is 167248152901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99288010000 + 9963832761 = 315100^2 + 99819^2 .

It is an emirp because it is prime and its reverse (167248152901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109251842761 is a prime.

It is not a weakly prime, because it can be changed into another prime (109251843761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54625921380 + 54625921381.

It is an arithmetic number, because the mean of its divisors is an integer number (54625921381).

Almost surely, 2^109251842761 is an apocalyptic number.

It is an amenable number.

109251842761 is a deficient number, since it is larger than the sum of its proper divisors (1).

109251842761 is an equidigital number, since it uses as much as digits as its factorization.

109251842761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 109251842761 in words is "one hundred nine billion, two hundred fifty-one million, eight hundred forty-two thousand, seven hundred sixty-one".