8214081261 has 8 divisors (see below), whose sum is σ = 10956557664. Its totient is φ = 5473829520.

The previous prime is 8214081247. The next prime is 8214081263. The reversal of 8214081261 is 1621804128.

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

It is not a de Polignac number, because 8214081261 - 2⁵ = 8214081229 is a prime.

It is a super-2 number, since 2×8214081261² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8214081263) 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, 547530 + ... + 562331.

It is an arithmetic number, because the mean of its divisors is an integer number (1369569708).

Almost surely, 2^8214081261 is an apocalyptic number.

It is an amenable number.

8214081261 is a deficient number, since it is larger than the sum of its proper divisors (2742476403).

8214081261 is a wasteful number, since it uses less digits than its factorization.

8214081261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112331.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 8214081261 is about 90631.5687881436. The cubic root of 8214081261 is about 2017.6832948297.

Adding to 8214081261 its reverse (1621804128), we get a palindrome (9835885389).

The spelling of 8214081261 in words is "eight billion, two hundred fourteen million, eighty-one thousand, two hundred sixty-one".