258048777971 has 2 divisors, whose sum is σ = 258048777972. Its totient is φ = 258048777970.

The previous prime is 258048777947. The next prime is 258048778021. The reversal of 258048777971 is 179777840852.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258048777971 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 258048777898 and 258048777907.

It is not a weakly prime, because it can be changed into another prime (258048777071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129024388985 + 129024388986.

It is an arithmetic number, because the mean of its divisors is an integer number (129024388986).

Almost surely, 2^258048777971 is an apocalyptic number.

258048777971 is a deficient number, since it is larger than the sum of its proper divisors (1).

258048777971 is an equidigital number, since it uses as much as digits as its factorization.

258048777971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55319040, while the sum is 65.

The spelling of 258048777971 in words is "two hundred fifty-eight billion, forty-eight million, seven hundred seventy-seven thousand, nine hundred seventy-one".