3287509487981 has 16 divisors (see below), whose sum is σ = 3309782099568. Its totient is φ = 3265295155200.

The previous prime is 3287509487959. The next prime is 3287509488061. The reversal of 3287509487981 is 1897849057823.

It can be written as a sum of positive squares in 8 ways, for example, as 44121002500 + 3243388485481 = 210050^2 + 1800941^2 .

It is a cyclic number.

It is not a de Polignac number, because 3287509487981 - 2¹⁸ = 3287509225837 is a prime.

It is a super-2 number, since 2×3287509487981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3287509481981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410063285 + ... + 410071301.

It is an arithmetic number, because the mean of its divisors is an integer number (206861381223).

Almost surely, 2^{3287509487981} is an apocalyptic number.

It is an amenable number.

3287509487981 is a deficient number, since it is larger than the sum of its proper divisors (22272611587).

3287509487981 is a wasteful number, since it uses less digits than its factorization.

3287509487981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312.

The product of its (nonzero) digits is 243855360, while the sum is 71.

The spelling of 3287509487981 in words is "three trillion, two hundred eighty-seven billion, five hundred nine million, four hundred eighty-seven thousand, nine hundred eighty-one".