3261251136 has 168 divisors, whose sum is σ = 10194060384. Its totient is φ = 912138240.

The previous prime is 3261251099. The next prime is 3261251159. The reversal of 3261251136 is 6311521623.

It is a super-2 number, since 2×3261251136² = 21271517944122580992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352360 + ... + 361496.

Almost surely, 2^3261251136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261251136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5097030192).

3261251136 is an abundant number, since it is smaller than the sum of its proper divisors (6932809248).

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

3261251136 is a wasteful number, since it uses less digits than its factorization.

3261251136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189 (or 9166 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 3261251136 is about 57107.3649891150. The cubic root of 3261251136 is about 1482.9553704460.

Adding to 3261251136 its reverse (6311521623), we get a palindrome (9572772759).

The spelling of 3261251136 in words is "three billion, two hundred sixty-one million, two hundred fifty-one thousand, one hundred thirty-six".