1011100505506 has 24 divisors (see below), whose sum is σ = 1899980073180. Its totient is φ = 399995803872.

The previous prime is 1011100505479. The next prime is 1011100505551. The reversal of 1011100505506 is 6055050011101.

1011100505506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 934008206481 + 77092299025 = 966441^2 + 277655^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396819961 + ... + 396822508.

Almost surely, 2^{1011100505506} is an apocalyptic number.

1011100505506 is a deficient number, since it is larger than the sum of its proper divisors (888879567674).

1011100505506 is a wasteful number, since it uses less digits than its factorization.

1011100505506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793642498 (or 793642491 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 1011100505506 its reverse (6055050011101), we get a palindrome (7066150516607).

The spelling of 1011100505506 in words is "one trillion, eleven billion, one hundred million, five hundred five thousand, five hundred six".