55511143409 has 12 divisors (see below), whose sum is σ = 58995472848. Its totient is φ = 52221960000.

The previous prime is 55511143361. The next prime is 55511143417. The reversal of 55511143409 is 90434111555.

It is not a de Polignac number, because 55511143409 - 2⁸ = 55511143153 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55511143459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607874 + ... + 693204.

It is an arithmetic number, because the mean of its divisors is an integer number (4916289404).

Almost surely, 2^55511143409 is an apocalyptic number.

It is an amenable number.

55511143409 is a deficient number, since it is larger than the sum of its proper divisors (3484329439).

55511143409 is a wasteful number, since it uses less digits than its factorization.

55511143409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87616 (or 87599 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 55511143409 in words is "fifty-five billion, five hundred eleven million, one hundred forty-three thousand, four hundred nine".