11031555140 has 12 divisors (see below), whose sum is σ = 23166265836. Its totient is φ = 4412622048.

The previous prime is 11031555083. The next prime is 11031555151. The reversal of 11031555140 is 4155513011.

It can be written as a sum of positive squares in 2 ways, for example, as 8540347396 + 2491207744 = 92414^2 + 49912^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275788859 + ... + 275788898.

It is an arithmetic number, because the mean of its divisors is an integer number (1930522153).

Almost surely, 2^11031555140 is an apocalyptic number.

11031555140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031555140 is an abundant number, since it is smaller than the sum of its proper divisors (12134710696).

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

11031555140 is a wasteful number, since it uses less digits than its factorization.

11031555140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551577766 (or 551577764 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 11031555140 in words is "eleven billion, thirty-one million, five hundred fifty-five thousand, one hundred forty".