1115105622661 has 4 divisors (see below), whose sum is σ = 1115137980000. Its totient is φ = 1115073265324.

The previous prime is 1115105622649. The next prime is 1115105622671. The reversal of 1115105622661 is 1662265015111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115105622661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115105622661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115105622601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16126921 + ... + 16195918.

It is an arithmetic number, because the mean of its divisors is an integer number (278784495000).

Almost surely, 2^{1115105622661} is an apocalyptic number.

It is an amenable number.

1115105622661 is a deficient number, since it is larger than the sum of its proper divisors (32357339).

1115105622661 is an equidigital number, since it uses as much as digits as its factorization.

1115105622661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32357338.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1115105622661 in words is "one trillion, one hundred fifteen billion, one hundred five million, six hundred twenty-two thousand, six hundred sixty-one".