3551238126855 has 12 divisors (see below), whose sum is σ = 6155479419960. Its totient is φ = 1893993667632.

The previous prime is 3551238126769. The next prime is 3551238126871. The reversal of 3551238126855 is 5586218321553.

3551238126855 is a `hidden beast` number, since 3 + 5 + 512 + 3 + 8 + 12 + 68 + 55 = 666.

It is not a de Polignac number, because 3551238126855 - 2⁹ = 3551238126343 is a prime.

It is a super-2 number, since 2×3551238126855² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 39458201365 + ... + 39458201454.

It is an arithmetic number, because the mean of its divisors is an integer number (512956618330).

Almost surely, 2^{3551238126855} is an apocalyptic number.

3551238126855 is a deficient number, since it is larger than the sum of its proper divisors (2604241293105).

3551238126855 is a wasteful number, since it uses less digits than its factorization.

3551238126855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78916402830 (or 78916402827 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 3551238126855 in words is "three trillion, five hundred fifty-one billion, two hundred thirty-eight million, one hundred twenty-six thousand, eight hundred fifty-five".