23554401109 has 2 divisors, whose sum is σ = 23554401110. Its totient is φ = 23554401108.

The previous prime is 23554401089. The next prime is 23554401133. The reversal of 23554401109 is 90110445532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21754775025 + 1799626084 = 147495^2 + 42422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23554401109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23554441109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11777200554 + 11777200555.

It is an arithmetic number, because the mean of its divisors is an integer number (11777200555).

Almost surely, 2^23554401109 is an apocalyptic number.

It is an amenable number.

23554401109 is a deficient number, since it is larger than the sum of its proper divisors (1).

23554401109 is an equidigital number, since it uses as much as digits as its factorization.

23554401109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 23554401109 in words is "twenty-three billion, five hundred fifty-four million, four hundred one thousand, one hundred nine".