11103831555 has 32 divisors (see below), whose sum is σ = 18545448960. Its totient is φ = 5662462080.

The previous prime is 11103831533. The next prime is 11103831559. The reversal of 11103831555 is 55513830111.

It is not a de Polignac number, because 11103831555 - 2⁹ = 11103831043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11103831559) 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, 1414381 + ... + 1422209.

It is an arithmetic number, because the mean of its divisors is an integer number (579545280).

Almost surely, 2^11103831555 is an apocalyptic number.

11103831555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11103831555 is a deficient number, since it is larger than the sum of its proper divisors (7441617405).

11103831555 is a wasteful number, since it uses less digits than its factorization.

11103831555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11971.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 11103831555 in words is "eleven billion, one hundred three million, eight hundred thirty-one thousand, five hundred fifty-five".