55211511443 has 24 divisors (see below), whose sum is σ = 61892694864. Its totient is φ = 49196987840.

The previous prime is 55211511413. The next prime is 55211511491. The reversal of 55211511443 is 34411511255.

It is not a de Polignac number, because 55211511443 - 2³⁰ = 54137769619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55211511413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7608605 + ... + 7615857.

It is an arithmetic number, because the mean of its divisors is an integer number (2578862286).

Almost surely, 2^55211511443 is an apocalyptic number.

55211511443 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55211511443 is a deficient number, since it is larger than the sum of its proper divisors (6681183421).

55211511443 is a wasteful number, since it uses less digits than its factorization.

55211511443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8515 (or 8504 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The spelling of 55211511443 in words is "fifty-five billion, two hundred eleven million, five hundred eleven thousand, four hundred forty-three".