1100500505555 has 32 divisors (see below), whose sum is σ = 1492741958400. Its totient is φ = 771516144000.

The previous prime is 1100500505549. The next prime is 1100500505563. The reversal of 1100500505555 is 5555050050011.

It is not a de Polignac number, because 1100500505555 - 2⁴ = 1100500505539 is a prime.

It is a super-2 number, since 2×1100500505555² (a number of 25 digits) contains 22 as substring.

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, 429980 + ... + 1544630.

It is an arithmetic number, because the mean of its divisors is an integer number (46648186200).

Almost surely, 2^{1100500505555} is an apocalyptic number.

1100500505555 is a deficient number, since it is larger than the sum of its proper divisors (392241452845).

1100500505555 is a wasteful number, since it uses less digits than its factorization.

1100500505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115315.

The product of its (nonzero) digits is 15625, while the sum is 32.

Adding to 1100500505555 its reverse (5555050050011), we get a palindrome (6655550555566).

The spelling of 1100500505555 in words is "one trillion, one hundred billion, five hundred million, five hundred five thousand, five hundred fifty-five".