2558949171329 has 4 divisors (see below), whose sum is σ = 2670207830976. Its totient is φ = 2447690511684.

The previous prime is 2558949171323. The next prime is 2558949171347. The reversal of 2558949171329 is 9231719498552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2558949171329 - 2²⁴ = 2558932394113 is a prime.

It is a super-2 number, since 2×2558949171329² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2558949171323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55629329789 + ... + 55629329834.

It is an arithmetic number, because the mean of its divisors is an integer number (667551957744).

Almost surely, 2^{2558949171329} is an apocalyptic number.

It is an amenable number.

2558949171329 is a deficient number, since it is larger than the sum of its proper divisors (111258659647).

2558949171329 is a wasteful number, since it uses less digits than its factorization.

2558949171329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111258659646.

The product of its digits is 48988800, while the sum is 65.

The spelling of 2558949171329 in words is "two trillion, five hundred fifty-eight billion, nine hundred forty-nine million, one hundred seventy-one thousand, three hundred twenty-nine".