261108672432 has 20 divisors (see below), whose sum is σ = 674530737240. Its totient is φ = 87036224128.

The previous prime is 261108672427. The next prime is 261108672437. The reversal of 261108672432 is 234276801162.

261108672432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (261108672427) and next prime (261108672437).

It is not an unprimeable number, because it can be changed into a prime (261108672437) by changing a digit.

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, 2719881957 + ... + 2719882052.

It is an arithmetic number, because the mean of its divisors is an integer number (33726536862).

Almost surely, 2^261108672432 is an apocalyptic number.

It is an amenable number.

261108672432 is an abundant number, since it is smaller than the sum of its proper divisors (413422064808).

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

261108672432 is a wasteful number, since it uses less digits than its factorization.

261108672432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5439764020 (or 5439764014 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 261108672432 in words is "two hundred sixty-one billion, one hundred eight million, six hundred seventy-two thousand, four hundred thirty-two".