1226109784785 has 8 divisors (see below), whose sum is σ = 1961775655680. Its totient is φ = 653925218544.

The previous prime is 1226109784703. The next prime is 1226109784819. The reversal of 1226109784785 is 5874879016221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226109784785 - 2¹⁵ = 1226109752017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40870326145 + ... + 40870326174.

It is an arithmetic number, because the mean of its divisors is an integer number (245221956960).

Almost surely, 2^{1226109784785} is an apocalyptic number.

1226109784785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1226109784785 is a deficient number, since it is larger than the sum of its proper divisors (735665870895).

1226109784785 is an equidigital number, since it uses as much as digits as its factorization.

1226109784785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81740652327.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 1226109784785 in words is "one trillion, two hundred twenty-six billion, one hundred nine million, seven hundred eighty-four thousand, seven hundred eighty-five".