258731691044 has 12 divisors (see below), whose sum is σ = 455558254704. Its totient is φ = 128572189704.

The previous prime is 258731690909. The next prime is 258731691067. The reversal of 258731691044 is 440196137852.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 258731690983 and 258731691001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198413222 + ... + 198414525.

It is an arithmetic number, because the mean of its divisors is an integer number (37963187892).

It is a 1-persistent number, because it is pandigital, but 2⋅258731691044 = 517463382088 is not.

Almost surely, 2^258731691044 is an apocalyptic number.

It is an amenable number.

258731691044 is a deficient number, since it is larger than the sum of its proper divisors (196826563660).

258731691044 is a wasteful number, since it uses less digits than its factorization.

258731691044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396827914 (or 396827912 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 258731691044 in words is "two hundred fifty-eight billion, seven hundred thirty-one million, six hundred ninety-one thousand, forty-four".