261441373277622 has 8 divisors (see below), whose sum is σ = 522882746555256. Its totient is φ = 87147124425872.

The previous prime is 261441373277549. The next prime is 261441373277659. The reversal of 261441373277622 is 226772373144162.

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

261441373277622 is an admirable number.

It is a super-2 number, since 2×261441373277622² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 21786781106463 + ... + 21786781106474.

It is an arithmetic number, because the mean of its divisors is an integer number (65360343319407).

Almost surely, 2^{261441373277622} is an apocalyptic number.

261441373277622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261441373277622 is a wasteful number, since it uses less digits than its factorization.

261441373277622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43573562212942.

The product of its digits is 28449792, while the sum is 57.

The spelling of 261441373277622 in words is "two hundred sixty-one trillion, four hundred forty-one billion, three hundred seventy-three million, two hundred seventy-seven thousand, six hundred twenty-two".