3261851289312 has 480 divisors, whose sum is σ = 11331220320000. Its totient is φ = 802596833280.

The previous prime is 3261851289299. The next prime is 3261851289337. The reversal of 3261851289312 is 2139821581623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 186927564 + ... + 186945012.

It is an arithmetic number, because the mean of its divisors is an integer number (23606709000).

Almost surely, 2^{3261851289312} is an apocalyptic number.

3261851289312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261851289312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5665610160000).

3261851289312 is an abundant number, since it is smaller than the sum of its proper divisors (8069369030688).

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

3261851289312 is a wasteful number, since it uses less digits than its factorization.

3261851289312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17532 (or 17491 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The spelling of 3261851289312 in words is "three trillion, two hundred sixty-one billion, eight hundred fifty-one million, two hundred eighty-nine thousand, three hundred twelve".