261671104112 has 20 divisors (see below), whose sum is σ = 553077561336. Its totient is φ = 118941410880.

The previous prime is 261671104099. The next prime is 261671104159. The reversal of 261671104112 is 211401176162.

261671104112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743383643 + ... + 743383994.

Almost surely, 2^261671104112 is an apocalyptic number.

261671104112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261671104112 is an abundant number, since it is smaller than the sum of its proper divisors (291406457224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261671104112 is a wasteful number, since it uses less digits than its factorization.

261671104112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486767656 (or 1486767650 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 261671104112 in words is "two hundred sixty-one billion, six hundred seventy-one million, one hundred four thousand, one hundred twelve".