5555010991000 has 128 divisors (see below), whose sum is σ = 13569621811200. Its totient is φ = 2124497020800.

The previous prime is 5555010990961. The next prime is 5555010991001. The reversal of 5555010991000 is 1990105555.

It is a super-2 number, since 2×5555010991000² (a number of 26 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555010991001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55679161 + ... + 55778839.

It is an arithmetic number, because the mean of its divisors is an integer number (106012670400).

Almost surely, 2^{5555010991000} is an apocalyptic number.

5555010991000 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 5555010991000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6784810905600).

5555010991000 is an abundant number, since it is smaller than the sum of its proper divisors (8014610820200).

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

5555010991000 is a wasteful number, since it uses less digits than its factorization.

5555010991000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102146 (or 102132 counting only the distinct ones).

The product of its (nonzero) digits is 50625, while the sum is 40.

The spelling of 5555010991000 in words is "five trillion, five hundred fifty-five billion, ten million, nine hundred ninety-one thousand".