23455667891 has 2 divisors, whose sum is σ = 23455667892. Its totient is φ = 23455667890.

The previous prime is 23455667801. The next prime is 23455667971. The reversal of 23455667891 is 19876655432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23455667891 - 2¹⁴ = 23455651507 is a prime.

It is not a weakly prime, because it can be changed into another prime (23455667801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11727833945 + 11727833946.

It is an arithmetic number, because the mean of its divisors is an integer number (11727833946).

Almost surely, 2^23455667891 is an apocalyptic number.

23455667891 is a deficient number, since it is larger than the sum of its proper divisors (1).

23455667891 is an equidigital number, since it uses as much as digits as its factorization.

23455667891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 56.

The spelling of 23455667891 in words is "twenty-three billion, four hundred fifty-five million, six hundred sixty-seven thousand, eight hundred ninety-one".