55550505550000 has 240 divisors, whose sum is σ = 137471171531904. Its totient is φ = 21734595200000.

The previous prime is 55550505549977. The next prime is 55550505550009. The reversal of 55550505550000 is 5550505555.

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

It is not an unprimeable number, because it can be changed into a prime (55550505550009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4636544010 + ... + 4636555990.

Almost surely, 2^{55550505550000} is an apocalyptic number.

55550505550000 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 55550505550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68735585765952).

55550505550000 is an abundant number, since it is smaller than the sum of its proper divisors (81920665981904).

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

55550505550000 is a wasteful number, since it uses less digits than its factorization.

55550505550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034 (or 14008 counting only the distinct ones).

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

The spelling of 55550505550000 in words is "fifty-five trillion, five hundred fifty billion, five hundred five million, five hundred fifty thousand".