390824774712257 has 2 divisors, whose sum is σ = 390824774712258. Its totient is φ = 390824774712256.

The previous prime is 390824774712247. The next prime is 390824774712271. The reversal of 390824774712257 is 752217477428093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390577789567681 + 246985144576 = 19763041^2 + 496976^2 .

It is a cyclic number.

It is not a de Polignac number, because 390824774712257 - 2²⁴ = 390824757935041 is a prime.

It is not a weakly prime, because it can be changed into another prime (390824774712247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195412387356128 + 195412387356129.

It is an arithmetic number, because the mean of its divisors is an integer number (195412387356129).

Almost surely, 2^{390824774712257} is an apocalyptic number.

It is an amenable number.

390824774712257 is a deficient number, since it is larger than the sum of its proper divisors (1).

390824774712257 is an equidigital number, since it uses as much as digits as its factorization.

390824774712257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331914240, while the sum is 68.

The spelling of 390824774712257 in words is "three hundred ninety trillion, eight hundred twenty-four billion, seven hundred seventy-four million, seven hundred twelve thousand, two hundred fifty-seven".