23401669849 has 2 divisors, whose sum is σ = 23401669850. Its totient is φ = 23401669848.

The previous prime is 23401669847. The next prime is 23401669853. The reversal of 23401669849 is 94896610432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23349368025 + 52301824 = 152805^2 + 7232^2 .

It is a cyclic number.

It is not a de Polignac number, because 23401669849 - 2¹ = 23401669847 is a prime.

Together with 23401669847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23401669796 and 23401669805.

It is not a weakly prime, because it can be changed into another prime (23401669847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700834924 + 11700834925.

It is an arithmetic number, because the mean of its divisors is an integer number (11700834925).

Almost surely, 2^23401669849 is an apocalyptic number.

It is an amenable number.

23401669849 is a deficient number, since it is larger than the sum of its proper divisors (1).

23401669849 is an equidigital number, since it uses as much as digits as its factorization.

23401669849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 23401669849 in words is "twenty-three billion, four hundred one million, six hundred sixty-nine thousand, eight hundred forty-nine".