1001105550555 has 32 divisors (see below), whose sum is σ = 1823357468160. Its totient is φ = 464280833280.

The previous prime is 1001105550551. The next prime is 1001105550593. The reversal of 1001105550555 is 5550555011001.

It is not a de Polignac number, because 1001105550555 - 2² = 1001105550551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1001105550551) 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, 131894170 + ... + 131901759.

It is an arithmetic number, because the mean of its divisors is an integer number (56979920880).

Almost surely, 2^{1001105550555} is an apocalyptic number.

1001105550555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001105550555 is a deficient number, since it is larger than the sum of its proper divisors (822251917605).

1001105550555 is a wasteful number, since it uses less digits than its factorization.

1001105550555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263795971.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 1001105550555 in words is "one trillion, one billion, one hundred five million, five hundred fifty thousand, five hundred fifty-five".