259148901981 has 16 divisors (see below), whose sum is σ = 346892958720. Its totient is φ = 172085707440.

The previous prime is 259148901911. The next prime is 259148902039. The reversal of 259148901981 is 189109841952.

It is not a de Polignac number, because 259148901981 - 2¹⁰ = 259148900957 is a prime.

It is a super-2 number, since 2×259148901981² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259148901911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3425146 + ... + 3499988.

It is an arithmetic number, because the mean of its divisors is an integer number (21680809920).

Almost surely, 2^259148901981 is an apocalyptic number.

It is an amenable number.

259148901981 is a deficient number, since it is larger than the sum of its proper divisors (87744056739).

259148901981 is a wasteful number, since it uses less digits than its factorization.

259148901981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79376.

The product of its (nonzero) digits is 1866240, while the sum is 57.

The spelling of 259148901981 in words is "two hundred fifty-nine billion, one hundred forty-eight million, nine hundred one thousand, nine hundred eighty-one".