3551448845987 has 12 divisors (see below), whose sum is σ = 4079297465136. Its totient is φ = 3028801794480.

The previous prime is 3551448845963. The next prime is 3551448846007. The reversal of 3551448845987 is 7895488441553.

It is a de Polignac number, because none of the positive numbers 2^k-3551448845987 is a prime.

It is a super-2 number, since 2×3551448845987² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3551448845987.

It is not an unprimeable number, because it can be changed into a prime (3551448845587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6128564 + ... + 6682977.

It is an arithmetic number, because the mean of its divisors is an integer number (339941455428).

Almost surely, 2^{3551448845987} is an apocalyptic number.

3551448845987 is a deficient number, since it is larger than the sum of its proper divisors (527848619149).

3551448845987 is an equidigital number, since it uses as much as digits as its factorization.

3551448845987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811946 (or 12811747 counting only the distinct ones).

The product of its digits is 774144000, while the sum is 71.

The spelling of 3551448845987 in words is "three trillion, five hundred fifty-one billion, four hundred forty-eight million, eight hundred forty-five thousand, nine hundred eighty-seven".