3261912768 has 280 divisors, whose sum is σ = 10068458400. Its totient is φ = 1043435520.

The previous prime is 3261912767. The next prime is 3261912803. The reversal of 3261912768 is 8672191623.

3261912768 is a `hidden beast` number, since 3 + 2 + 619 + 1 + 27 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (3261912767) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21891958 + ... + 21892106.

It is an arithmetic number, because the mean of its divisors is an integer number (35958780).

Almost surely, 2^3261912768 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 3261912768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5034229200).

3261912768 is an abundant number, since it is smaller than the sum of its proper divisors (6806545632).

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

3261912768 is a wasteful number, since it uses less digits than its factorization.

3261912768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 298 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 3261912768 is about 57113.1575733648. The cubic root of 3261912768 is about 1483.0556493821.

The spelling of 3261912768 in words is "three billion, two hundred sixty-one million, nine hundred twelve thousand, seven hundred sixty-eight".