8261082849261 has 8 divisors (see below), whose sum is σ = 12016120508064. Its totient is φ = 5006716878320.

The previous prime is 8261082849251. The next prime is 8261082849289. The reversal of 8261082849261 is 1629482801628.

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

It is a cyclic number.

It is not a de Polignac number, because 8261082849261 - 2¹³ = 8261082841069 is a prime.

It is a super-2 number, since 2×8261082849261² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261082849221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125167921926 + ... + 125167921991.

It is an arithmetic number, because the mean of its divisors is an integer number (1502015063508).

Almost surely, 2^{8261082849261} is an apocalyptic number.

It is an amenable number.

8261082849261 is a deficient number, since it is larger than the sum of its proper divisors (3755037658803).

8261082849261 is a wasteful number, since it uses less digits than its factorization.

8261082849261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250335843931.

The product of its (nonzero) digits is 5308416, while the sum is 57.

The spelling of 8261082849261 in words is "eight trillion, two hundred sixty-one billion, eighty-two million, eight hundred forty-nine thousand, two hundred sixty-one".