261324564267 has 8 divisors (see below), whose sum is σ = 375235271824. Its totient is φ = 160815116448.

The previous prime is 261324564209. The next prime is 261324564287. The reversal of 261324564267 is 762465423162.

It is a happy number.

261324564267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261324564267 - 2⁷ = 261324564139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261324564287) 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 7 ways as a sum of consecutive naturals, for example, 3350314888 + ... + 3350314965.

It is an arithmetic number, because the mean of its divisors is an integer number (46904408978).

Almost surely, 2^261324564267 is an apocalyptic number.

261324564267 is a deficient number, since it is larger than the sum of its proper divisors (113910707557).

261324564267 is a wasteful number, since it uses less digits than its factorization.

261324564267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700629869.

The product of its digits is 2903040, while the sum is 48.

The spelling of 261324564267 in words is "two hundred sixty-one billion, three hundred twenty-four million, five hundred sixty-four thousand, two hundred sixty-seven".