3551648419681 has 8 divisors (see below), whose sum is σ = 3553839166464. Its totient is φ = 3549457856880.

The previous prime is 3551648419679. The next prime is 3551648419703. The reversal of 3551648419681 is 1869148461553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3551648419681 - 2¹ = 3551648419679 is a prime.

It is a super-2 number, since 2×3551648419681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551648449681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75780651 + ... + 75827503.

It is an arithmetic number, because the mean of its divisors is an integer number (444229895808).

Almost surely, 2^{3551648419681} is an apocalyptic number.

It is an amenable number.

3551648419681 is a deficient number, since it is larger than the sum of its proper divisors (2190746783).

3551648419681 is a wasteful number, since it uses less digits than its factorization.

3551648419681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91991.

The product of its digits is 24883200, while the sum is 61.

The spelling of 3551648419681 in words is "three trillion, five hundred fifty-one billion, six hundred forty-eight million, four hundred nineteen thousand, six hundred eighty-one".