23920968646669 has 2 divisors, whose sum is σ = 23920968646670. Its totient is φ = 23920968646668.

The previous prime is 23920968646643. The next prime is 23920968646691. The reversal of 23920968646669 is 96664686902932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20010976529769 + 3909992116900 = 4473363^2 + 1977370^2 .

It is a cyclic number.

It is not a de Polignac number, because 23920968646669 - 2²⁵ = 23920935092237 is a prime.

It is a super-2 number, since 2×23920968646669² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23920968646595 and 23920968646604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23920968646639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11960484323334 + 11960484323335.

It is an arithmetic number, because the mean of its divisors is an integer number (11960484323335).

Almost surely, 2^{23920968646669} is an apocalyptic number.

It is an amenable number.

23920968646669 is a deficient number, since it is larger than the sum of its proper divisors (1).

23920968646669 is an equidigital number, since it uses as much as digits as its factorization.

23920968646669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2176782336, while the sum is 76.

The spelling of 23920968646669 in words is "twenty-three trillion, nine hundred twenty billion, nine hundred sixty-eight million, six hundred forty-six thousand, six hundred sixty-nine".