55500055505500 has 96 divisors (see below), whose sum is σ = 123351170394816. Its totient is φ = 21809152800000.

The previous prime is 55500055505491. The next prime is 55500055505527. The reversal of 55500055505500 is 550555000555.

It is a super-2 number, since 2×55500055505500² (a number of 28 digits) contains 22 as substring.

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, 23613630 + ... + 25857370.

It is an arithmetic number, because the mean of its divisors is an integer number (1284908024946).

Almost surely, 2^{55500055505500} is an apocalyptic number.

55500055505500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55500055505500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61675585197408).

55500055505500 is an abundant number, since it is smaller than the sum of its proper divisors (67851114889316).

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

55500055505500 is a wasteful number, since it uses less digits than its factorization.

55500055505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244632 (or 2244620 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The spelling of 55500055505500 in words is "fifty-five trillion, five hundred billion, fifty-five million, five hundred five thousand, five hundred".