1123623142511 has 4 divisors (see below), whose sum is σ = 1124589285672. Its totient is φ = 1122656999352.

The previous prime is 1123623142501. The next prime is 1123623142549. The reversal of 1123623142511 is 1152413263211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123623142511 - 2³⁸ = 848745235567 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 (1123623142501) 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, 483069836 + ... + 483072161.

It is an arithmetic number, because the mean of its divisors is an integer number (281147321418).

Almost surely, 2^{1123623142511} is an apocalyptic number.

1123623142511 is a deficient number, since it is larger than the sum of its proper divisors (966143161).

1123623142511 is an equidigital number, since it uses as much as digits as its factorization.

1123623142511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966143160.

The product of its digits is 8640, while the sum is 32.

The spelling of 1123623142511 in words is "one trillion, one hundred twenty-three billion, six hundred twenty-three million, one hundred forty-two thousand, five hundred eleven".