1123681706501 has 4 divisors (see below), whose sum is σ = 1123689650604. Its totient is φ = 1123673762400.

The previous prime is 1123681706489. The next prime is 1123681706503. The reversal of 1123681706501 is 1056071863211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 183607965025 + 940073741476 = 428495^2 + 969574^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123681706501 - 2¹⁸ = 1123681444357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123681706503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3755960 + ... + 4044081.

It is an arithmetic number, because the mean of its divisors is an integer number (280922412651).

Almost surely, 2^{1123681706501} is an apocalyptic number.

It is an amenable number.

1123681706501 is a deficient number, since it is larger than the sum of its proper divisors (7944103).

1123681706501 is an equidigital number, since it uses as much as digits as its factorization.

1123681706501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7944102.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 1123681706501 in words is "one trillion, one hundred twenty-three billion, six hundred eighty-one million, seven hundred six thousand, five hundred one".