261543677460422 has 8 divisors (see below), whose sum is σ = 448360589932176. Its totient is φ = 112090147483032.

The previous prime is 261543677460421. The next prime is 261543677460431. The reversal of 261543677460422 is 224064776345162.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261543677460421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9340845623573 + ... + 9340845623600.

It is an arithmetic number, because the mean of its divisors is an integer number (56045073741522).

Almost surely, 2^{261543677460422} is an apocalyptic number.

261543677460422 is a deficient number, since it is larger than the sum of its proper divisors (186816912471754).

261543677460422 is a wasteful number, since it uses less digits than its factorization.

261543677460422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681691247182.

The product of its (nonzero) digits is 81285120, while the sum is 59.

The spelling of 261543677460422 in words is "two hundred sixty-one trillion, five hundred forty-three billion, six hundred seventy-seven million, four hundred sixty thousand, four hundred twenty-two".