11427578923 has 2 divisors, whose sum is σ = 11427578924. Its totient is φ = 11427578922.

The previous prime is 11427578879. The next prime is 11427578951. The reversal of 11427578923 is 32987572411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11427578923 is a prime.

It is not a weakly prime, because it can be changed into another prime (11427578983) 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 as a sum of consecutive naturals, namely, 5713789461 + 5713789462.

It is an arithmetic number, because the mean of its divisors is an integer number (5713789462).

Almost surely, 2^11427578923 is an apocalyptic number.

11427578923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11427578923 is an equidigital number, since it uses as much as digits as its factorization.

11427578923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The spelling of 11427578923 in words is "eleven billion, four hundred twenty-seven million, five hundred seventy-eight thousand, nine hundred twenty-three".