55534330013440 has 144 divisors (see below), whose sum is σ = 133186092238080. Its totient is φ = 22186356408320.

The previous prime is 55534330013401. The next prime is 55534330013473. The reversal of 55534330013440 is 4431003343555.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 55534330013393 and 55534330013402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7682155746 + ... + 7682162974.

It is an arithmetic number, because the mean of its divisors is an integer number (924903418320).

Almost surely, 2^{55534330013440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55534330013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66593046119040).

55534330013440 is an abundant number, since it is smaller than the sum of its proper divisors (77651762224640).

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

55534330013440 is a wasteful number, since it uses less digits than its factorization.

55534330013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13818 (or 13804 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 55534330013440 its reverse (4431003343555), we get a palindrome (59965333356995).

The spelling of 55534330013440 in words is "fifty-five trillion, five hundred thirty-four billion, three hundred thirty million, thirteen thousand, four hundred forty".