555666650000 has 480 divisors, whose sum is σ = 1695513980160. Its totient is φ = 171360000000.

The previous prime is 555666649981. The next prime is 555666650003. The reversal of 555666650000 is 56666555.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (555666650003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 388849286 + ... + 388850714.

It is an arithmetic number, because the mean of its divisors is an integer number (3532320792).

Almost surely, 2^555666650000 is an apocalyptic number.

555666650000 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 555666650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847756990080).

555666650000 is an abundant number, since it is smaller than the sum of its proper divisors (1139847330160).

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

555666650000 is a wasteful number, since it uses less digits than its factorization.

555666650000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 555666650000 in words is "five hundred fifty-five billion, six hundred sixty-six million, six hundred fifty thousand".