1011050055540 has 144 divisors (see below), whose sum is σ = 3505942806912. Its totient is φ = 231033247488.

The previous prime is 1011050055469. The next prime is 1011050055557. The reversal of 1011050055540 is 455500501101.

1011050055540 is a `hidden beast` number, since 1 + 0 + 1 + 105 + 0 + 0 + 5 + 554 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4523907 + ... + 4742133.

It is an arithmetic number, because the mean of its divisors is an integer number (24346825048).

Almost surely, 2^{1011050055540} is an apocalyptic number.

1011050055540 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 1011050055540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752971403456).

1011050055540 is an abundant number, since it is smaller than the sum of its proper divisors (2494892751372).

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

1011050055540 is a wasteful number, since it uses less digits than its factorization.

1011050055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221926 (or 221921 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

Adding to 1011050055540 its reverse (455500501101), we get a palindrome (1466550556641).

The spelling of 1011050055540 in words is "one trillion, eleven billion, fifty million, fifty-five thousand, five hundred forty".