245988105691 has 2 divisors, whose sum is σ = 245988105692. Its totient is φ = 245988105690.

The previous prime is 245988105653. The next prime is 245988105709. The reversal of 245988105691 is 196501889542.

245988105691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245988105691 - 2¹³ = 245988097499 is a prime.

It is not a weakly prime, because it can be changed into another prime (245988105641) 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, 122994052845 + 122994052846.

It is an arithmetic number, because the mean of its divisors is an integer number (122994052846).

Almost surely, 2^245988105691 is an apocalyptic number.

245988105691 is a deficient number, since it is larger than the sum of its proper divisors (1).

245988105691 is an equidigital number, since it uses as much as digits as its factorization.

245988105691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6220800, while the sum is 58.

The spelling of 245988105691 in words is "two hundred forty-five billion, nine hundred eighty-eight million, one hundred five thousand, six hundred ninety-one".