259171982121 has 32 divisors (see below), whose sum is σ = 394456704768. Its totient is φ = 149948098560.

The previous prime is 259171982119. The next prime is 259171982143. The reversal of 259171982121 is 121289171952.

It is not a de Polignac number, because 259171982121 - 2¹ = 259171982119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259171980121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412636 + ... + 829826.

It is an arithmetic number, because the mean of its divisors is an integer number (12326772024).

Almost surely, 2^259171982121 is an apocalyptic number.

It is an amenable number.

259171982121 is a deficient number, since it is larger than the sum of its proper divisors (135284722647).

259171982121 is a wasteful number, since it uses less digits than its factorization.

259171982121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418161.

The product of its digits is 181440, while the sum is 48.

The spelling of 259171982121 in words is "two hundred fifty-nine billion, one hundred seventy-one million, nine hundred eighty-two thousand, one hundred twenty-one".