258415827473 has 2 divisors, whose sum is σ = 258415827474. Its totient is φ = 258415827472.

The previous prime is 258415827463. The next prime is 258415827497. The reversal of 258415827473 is 374728514852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169964903824 + 88450923649 = 412268^2 + 297407^2 .

It is a cyclic number.

It is not a de Polignac number, because 258415827473 - 2⁸ = 258415827217 is a prime.

It is not a weakly prime, because it can be changed into another prime (258415827413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129207913736 + 129207913737.

It is an arithmetic number, because the mean of its divisors is an integer number (129207913737).

Almost surely, 2^258415827473 is an apocalyptic number.

It is an amenable number.

258415827473 is a deficient number, since it is larger than the sum of its proper divisors (1).

258415827473 is an equidigital number, since it uses as much as digits as its factorization.

258415827473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15052800, while the sum is 56.

The spelling of 258415827473 in words is "two hundred fifty-eight billion, four hundred fifteen million, eight hundred twenty-seven thousand, four hundred seventy-three".