55500555055540 has 96 divisors (see below), whose sum is σ = 134507202600960. Its totient is φ = 18842370190464.

The previous prime is 55500555055499. The next prime is 55500555055571. The reversal of 55500555055540 is 4555055500555.

It is a super-3 number, since 3×55500555055540³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32221491 + ... + 33900229.

It is an arithmetic number, because the mean of its divisors is an integer number (1401116693760).

Almost surely, 2^{55500555055540} 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 55500555055540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67253601300480).

55500555055540 is an abundant number, since it is smaller than the sum of its proper divisors (79006647545420).

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

55500555055540 is a wasteful number, since it uses less digits than its factorization.

55500555055540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681069 (or 1681067 counting only the distinct ones).

The product of its (nonzero) digits is 7812500, while the sum is 49.

The spelling of 55500555055540 in words is "fifty-five trillion, five hundred billion, five hundred fifty-five million, fifty-five thousand, five hundred forty".