1105001055551 has 4 divisors (see below), whose sum is σ = 1113701851392. Its totient is φ = 1096300259712.

The previous prime is 1105001055463. The next prime is 1105001055559. The reversal of 1105001055551 is 1555501005011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105001055551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105001055559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4350397730 + ... + 4350397983.

It is an arithmetic number, because the mean of its divisors is an integer number (278425462848).

Almost surely, 2^{1105001055551} is an apocalyptic number.

1105001055551 is a deficient number, since it is larger than the sum of its proper divisors (8700795841).

1105001055551 is an equidigital number, since it uses as much as digits as its factorization.

1105001055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700795840.

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 1105001055551 in words is "one trillion, one hundred five billion, one million, fifty-five thousand, five hundred fifty-one".