258219457287691 has 2 divisors, whose sum is σ = 258219457287692. Its totient is φ = 258219457287690.

The previous prime is 258219457287569. The next prime is 258219457287697. The reversal of 258219457287691 is 196782754912852.

258219457287691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258219457287691 - 2¹³ = 258219457279499 is a prime.

It is a super-2 number, since 2×258219457287691² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258219457287697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129109728643845 + 129109728643846.

It is an arithmetic number, because the mean of its divisors is an integer number (129109728643846).

Almost surely, 2^{258219457287691} is an apocalyptic number.

258219457287691 is a deficient number, since it is larger than the sum of its proper divisors (1).

258219457287691 is an equidigital number, since it uses as much as digits as its factorization.

258219457287691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1219276800, while the sum is 76.

The spelling of 258219457287691 in words is "two hundred fifty-eight trillion, two hundred nineteen billion, four hundred fifty-seven million, two hundred eighty-seven thousand, six hundred ninety-one".