245263761601 has 2 divisors, whose sum is σ = 245263761602. Its totient is φ = 245263761600.

The previous prime is 245263761599. The next prime is 245263761641. The reversal of 245263761601 is 106167362542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227414534400 + 17849227201 = 476880^2 + 133601^2 .

It is a cyclic number.

It is not a de Polignac number, because 245263761601 - 2¹ = 245263761599 is a prime.

Together with 245263761599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (245263761641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122631880800 + 122631880801.

It is an arithmetic number, because the mean of its divisors is an integer number (122631880801).

Almost surely, 2^245263761601 is an apocalyptic number.

It is an amenable number.

245263761601 is a deficient number, since it is larger than the sum of its proper divisors (1).

245263761601 is an equidigital number, since it uses as much as digits as its factorization.

245263761601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 245263761601 in words is "two hundred forty-five billion, two hundred sixty-three million, seven hundred sixty-one thousand, six hundred one".