3551868681441 has 16 divisors (see below), whose sum is σ = 4739845363968. Its totient is φ = 2365902982800.

The previous prime is 3551868681419. The next prime is 3551868681443. The reversal of 3551868681441 is 1441868681553.

It is not a de Polignac number, because 3551868681441 - 2⁶ = 3551868681377 is a prime.

It is a super-2 number, since 2×3551868681441² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3551868681443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19252726 + ... + 19436336.

It is an arithmetic number, because the mean of its divisors is an integer number (296240335248).

Almost surely, 2^{3551868681441} is an apocalyptic number.

It is an amenable number.

3551868681441 is a deficient number, since it is larger than the sum of its proper divisors (1187976682527).

3551868681441 is a wasteful number, since it uses less digits than its factorization.

3551868681441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189052.

The product of its digits is 22118400, while the sum is 60.

The spelling of 3551868681441 in words is "three trillion, five hundred fifty-one billion, eight hundred sixty-eight million, six hundred eighty-one thousand, four hundred forty-one".