55534133440 has 56 divisors (see below), whose sum is σ = 132331675392. Its totient is φ = 22198364160.

The previous prime is 55534133437. The next prime is 55534133453. The reversal of 55534133440 is 4433143555.

It is a self number, because there is not a number n which added to its sum of digits gives 55534133440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411732 + ... + 529708.

It is an arithmetic number, because the mean of its divisors is an integer number (2363065632).

Almost surely, 2^55534133440 is an apocalyptic number.

It is an amenable number.

55534133440 is an abundant number, since it is smaller than the sum of its proper divisors (76797541952).

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

55534133440 is a wasteful number, since it uses less digits than its factorization.

55534133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119465 (or 119455 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 55534133440 its reverse (4433143555), we get a palindrome (59967276995).

The spelling of 55534133440 in words is "fifty-five billion, five hundred thirty-four million, one hundred thirty-three thousand, four hundred forty".