55111330143400 has 96 divisors (see below), whose sum is σ = 135053237568600. Its totient is φ = 20882783667200.

The previous prime is 55111330143391. The next prime is 55111330143461. The reversal of 55111330143400 is 434103311155.

It can be written as a sum of positive squares in 12 ways, for example, as 9106066675876 + 46005263467524 = 3017626^2 + 6782718^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89333671 + ... + 89948470.

Almost surely, 2^{55111330143400} is an apocalyptic number.

55111330143400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55111330143400 is an abundant number, since it is smaller than the sum of its proper divisors (79941907425200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55111330143400 is a wasteful number, since it uses less digits than its factorization.

55111330143400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179282239 (or 179282230 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 55111330143400 its reverse (434103311155), we get a palindrome (55545433454555).

The spelling of 55111330143400 in words is "fifty-five trillion, one hundred eleven billion, three hundred thirty million, one hundred forty-three thousand, four hundred".