23440205329 has 2 divisors, whose sum is σ = 23440205330. Its totient is φ = 23440205328.

The previous prime is 23440205287. The next prime is 23440205333. The reversal of 23440205329 is 92350204432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18339388929 + 5100816400 = 135423^2 + 71420^2 .

It is a cyclic number.

It is not a de Polignac number, because 23440205329 - 2¹⁷ = 23440074257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23440205294 and 23440205303.

It is not a weakly prime, because it can be changed into another prime (23440205629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720102664 + 11720102665.

It is an arithmetic number, because the mean of its divisors is an integer number (11720102665).

Almost surely, 2^23440205329 is an apocalyptic number.

It is an amenable number.

23440205329 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440205329 is an equidigital number, since it uses as much as digits as its factorization.

23440205329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 23440205329 in words is "twenty-three billion, four hundred forty million, two hundred five thousand, three hundred twenty-nine".