3287987737981 has 2 divisors, whose sum is σ = 3287987737982. Its totient is φ = 3287987737980.

The previous prime is 3287987737963. The next prime is 3287987738059. The reversal of 3287987737981 is 1897377897823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2098830202756 + 1189157535225 = 1448734^2 + 1090485^2 .

It is a cyclic number.

It is not a de Polignac number, because 3287987737981 - 2⁹ = 3287987737469 is a prime.

It is a super-2 number, since 2×3287987737981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3287987437981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1643993868990 + 1643993868991.

It is an arithmetic number, because the mean of its divisors is an integer number (1643993868991).

Almost surely, 2^{3287987737981} is an apocalyptic number.

It is an amenable number.

3287987737981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3287987737981 is an equidigital number, since it uses as much as digits as its factorization.

3287987737981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792336896, while the sum is 79.

The spelling of 3287987737981 in words is "three trillion, two hundred eighty-seven billion, nine hundred eighty-seven million, seven hundred thirty-seven thousand, nine hundred eighty-one".