261168433 has 12 divisors (see below), whose sum is σ = 292042960. Its totient is φ = 232863552.

The previous prime is 261168431. The next prime is 261168437. The reversal of 261168433 is 334861162.

It is a happy number.

261168433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261168433 - 2¹ = 261168431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261168431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18291 + ... + 29272.

Almost surely, 2^261168433 is an apocalyptic number.

It is an amenable number.

261168433 is a deficient number, since it is larger than the sum of its proper divisors (30874527).

261168433 is a wasteful number, since it uses less digits than its factorization.

261168433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47616 (or 47599 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 261168433 is about 16160.7064511425. The cubic root of 261168433 is about 639.2050946478.

The spelling of 261168433 in words is "two hundred sixty-one million, one hundred sixty-eight thousand, four hundred thirty-three".