245727714646577 has 2 divisors, whose sum is σ = 245727714646578. Its totient is φ = 245727714646576.

The previous prime is 245727714646571. The next prime is 245727714646621. The reversal of 245727714646577 is 775646417727542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223270058066176 + 22457656580401 = 14942224^2 + 4738951^2 .

It is a cyclic number.

It is not a de Polignac number, because 245727714646577 - 2⁸ = 245727714646321 is a prime.

It is not a weakly prime, because it can be changed into another prime (245727714646571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122863857323288 + 122863857323289.

It is an arithmetic number, because the mean of its divisors is an integer number (122863857323289).

Almost surely, 2^{245727714646577} is an apocalyptic number.

It is an amenable number.

245727714646577 is a deficient number, since it is larger than the sum of its proper divisors (1).

245727714646577 is an equidigital number, since it uses as much as digits as its factorization.

245727714646577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3872332800, while the sum is 74.

The spelling of 245727714646577 in words is "two hundred forty-five trillion, seven hundred twenty-seven billion, seven hundred fourteen million, six hundred forty-six thousand, five hundred seventy-seven".