23373343661 has 2 divisors, whose sum is σ = 23373343662. Its totient is φ = 23373343660.

The previous prime is 23373343621. The next prime is 23373343691. The reversal of 23373343661 is 16634337332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19341855625 + 4031488036 = 139075^2 + 63494^2 .

It is a cyclic number.

It is not a de Polignac number, because 23373343661 - 2¹⁸ = 23373081517 is a prime.

It is a super-3 number, since 3×23373343661³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23373343621) 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, 11686671830 + 11686671831.

It is an arithmetic number, because the mean of its divisors is an integer number (11686671831).

Almost surely, 2^23373343661 is an apocalyptic number.

It is an amenable number.

23373343661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23373343661 is an equidigital number, since it uses as much as digits as its factorization.

23373343661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 41.

The spelling of 23373343661 in words is "twenty-three billion, three hundred seventy-three million, three hundred forty-three thousand, six hundred sixty-one".