261433494548 has 24 divisors (see below), whose sum is σ = 479099275200. Its totient is φ = 124588439360.

The previous prime is 261433494521. The next prime is 261433494583. The reversal of 261433494548 is 845494334162.

It is a happy number.

261433494548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261433494548.

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 7 ways as a sum of consecutive naturals, for example, 5030498 + ... + 5082201.

It is an arithmetic number, because the mean of its divisors is an integer number (19962469800).

Almost surely, 2^261433494548 is an apocalyptic number.

It is an amenable number.

261433494548 is a deficient number, since it is larger than the sum of its proper divisors (217665780652).

261433494548 is a wasteful number, since it uses less digits than its factorization.

261433494548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113007 (or 10113005 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 53.

The spelling of 261433494548 in words is "two hundred sixty-one billion, four hundred thirty-three million, four hundred ninety-four thousand, five hundred forty-eight".