258371223553 has 12 divisors (see below), whose sum is σ = 260403907428. Its totient is φ = 256353672960.

The previous prime is 258371223353. The next prime is 258371223599. The reversal of 258371223553 is 355322173852.

It can be written as a sum of positive squares in 2 ways, for example, as 69813793729 + 188557429824 = 264223^2 + 434232^2 .

It is not a de Polignac number, because 258371223553 - 2²⁹ = 257834352641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258371223353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16385193 + ... + 16400953.

It is an arithmetic number, because the mean of its divisors is an integer number (21700325619).

It is a Proth number, since it is equal to 123201 ⋅ 2²¹ + 1 and 123201 < 2²¹.

Almost surely, 2^258371223553 is an apocalyptic number.

It is an amenable number.

258371223553 is a deficient number, since it is larger than the sum of its proper divisors (2032683875).

258371223553 is an equidigital number, since it uses as much as digits as its factorization.

258371223553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16704 (or 16541 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 46.

The spelling of 258371223553 in words is "two hundred fifty-eight billion, three hundred seventy-one million, two hundred twenty-three thousand, five hundred fifty-three".