261845653448 has 16 divisors (see below), whose sum is σ = 491135797680. Its totient is φ = 130876107408.

The previous prime is 261845653393. The next prime is 261845653453. The reversal of 261845653448 is 844356548162.

261845653448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261845653448² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261845653393 and 261845653402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5816090 + ... + 5860937.

It is an arithmetic number, because the mean of its divisors is an integer number (30695987355).

Almost surely, 2^261845653448 is an apocalyptic number.

It is an amenable number.

261845653448 is a deficient number, since it is larger than the sum of its proper divisors (229290144232).

261845653448 is a wasteful number, since it uses less digits than its factorization.

261845653448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679836 (or 11679832 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 56.

The spelling of 261845653448 in words is "two hundred sixty-one billion, eight hundred forty-five million, six hundred fifty-three thousand, four hundred forty-eight".