23445199949 has 2 divisors, whose sum is σ = 23445199950. Its totient is φ = 23445199948.

The previous prime is 23445199909. The next prime is 23445200057. The reversal of 23445199949 is 94999154432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19951562500 + 3493637449 = 141250^2 + 59107^2 .

It is a cyclic number.

It is not a de Polignac number, because 23445199949 - 2¹⁶ = 23445134413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23445199909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722599974 + 11722599975.

It is an arithmetic number, because the mean of its divisors is an integer number (11722599975).

Almost surely, 2^23445199949 is an apocalyptic number.

It is an amenable number.

23445199949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23445199949 is an equidigital number, since it uses as much as digits as its factorization.

23445199949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 59.

The spelling of 23445199949 in words is "twenty-three billion, four hundred forty-five million, one hundred ninety-nine thousand, nine hundred forty-nine".