258495378427 has 16 divisors (see below), whose sum is σ = 303883953408. Its totient is φ = 216778430880.

The previous prime is 258495378403. The next prime is 258495378481. The reversal of 258495378427 is 724873594852.

It is a de Polignac number, because none of the positive numbers 2^k-258495378427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258495379427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365113 + ... + 806410.

It is an arithmetic number, because the mean of its divisors is an integer number (18992747088).

Almost surely, 2^258495378427 is an apocalyptic number.

258495378427 is a deficient number, since it is larger than the sum of its proper divisors (45388574981).

258495378427 is a wasteful number, since it uses less digits than its factorization.

258495378427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173090.

The product of its digits is 135475200, while the sum is 64.

The spelling of 258495378427 in words is "two hundred fifty-eight billion, four hundred ninety-five million, three hundred seventy-eight thousand, four hundred twenty-seven".