1011005550500 has 96 divisors (see below), whose sum is σ = 2420185412736. Its totient is φ = 365895600000.

The previous prime is 1011005550481. The next prime is 1011005550521. The reversal of 1011005550500 is 50555001101.

It is a happy number.

1011005550500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 724910 + ... + 1596090.

It is an arithmetic number, because the mean of its divisors is an integer number (25210264716).

Almost surely, 2^{1011005550500} is an apocalyptic number.

1011005550500 is a gapful number since it is divisible by the number (10) 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 1011005550500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210092706368).

1011005550500 is an abundant number, since it is smaller than the sum of its proper divisors (1409179862236).

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

1011005550500 is a wasteful number, since it uses less digits than its factorization.

1011005550500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871422 (or 871410 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 1011005550500 in words is "one trillion, eleven billion, five million, five hundred fifty thousand, five hundred".