261423422984 has 16 divisors (see below), whose sum is σ = 501568195920. Its totient is φ = 127671904080.

The previous prime is 261423422977. The next prime is 261423422989. The reversal of 261423422984 is 489224324162.

261423422984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261423422989) 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, 379975562 + ... + 379976249.

It is an arithmetic number, because the mean of its divisors is an integer number (31348012245).

Almost surely, 2^261423422984 is an apocalyptic number.

It is an amenable number.

261423422984 is a deficient number, since it is larger than the sum of its proper divisors (240144772936).

261423422984 is a wasteful number, since it uses less digits than its factorization.

261423422984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759951860 (or 759951856 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 47.

The spelling of 261423422984 in words is "two hundred sixty-one billion, four hundred twenty-three million, four hundred twenty-two thousand, nine hundred eighty-four".