11723263913121 has 4 divisors (see below), whose sum is σ = 15631018550832. Its totient is φ = 7815509275412.

The previous prime is 11723263913117. The next prime is 11723263913189. The reversal of 11723263913121 is 12131936232711.

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 not a de Polignac number, because 11723263913121 - 2² = 11723263913117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11723263913321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953877318851 + ... + 1953877318856.

It is an arithmetic number, because the mean of its divisors is an integer number (3907754637708).

Almost surely, 2^{11723263913121} is an apocalyptic number.

It is an amenable number.

11723263913121 is a deficient number, since it is larger than the sum of its proper divisors (3907754637711).

11723263913121 is an equidigital number, since it uses as much as digits as its factorization.

11723263913121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907754637710.

The product of its digits is 81648, while the sum is 42.

The spelling of 11723263913121 in words is "eleven trillion, seven hundred twenty-three billion, two hundred sixty-three million, nine hundred thirteen thousand, one hundred twenty-one".