258797844377 has 2 divisors, whose sum is σ = 258797844378. Its totient is φ = 258797844376.

The previous prime is 258797844343. The next prime is 258797844407. The reversal of 258797844377 is 773448797852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153049958656 + 105747885721 = 391216^2 + 325189^2 .

It is a cyclic number.

It is not a de Polignac number, because 258797844377 - 2¹⁴ = 258797827993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258797844377.

It is not a weakly prime, because it can be changed into another prime (258797840377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129398922188 + 129398922189.

It is an arithmetic number, because the mean of its divisors is an integer number (129398922189).

Almost surely, 2^258797844377 is an apocalyptic number.

It is an amenable number.

258797844377 is a deficient number, since it is larger than the sum of its proper divisors (1).

258797844377 is an equidigital number, since it uses as much as digits as its factorization.

258797844377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663828480, while the sum is 71.

The spelling of 258797844377 in words is "two hundred fifty-eight billion, seven hundred ninety-seven million, eight hundred forty-four thousand, three hundred seventy-seven".