23918067681853 has 2 divisors, whose sum is σ = 23918067681854. Its totient is φ = 23918067681852.

The previous prime is 23918067681817. The next prime is 23918067681857. The reversal of 23918067681853 is 35818676081932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12850482749049 + 11067584932804 = 3584757^2 + 3326798^2 .

It is a cyclic number.

It is not a de Polignac number, because 23918067681853 - 2¹⁷ = 23918067550781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23918067681857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11959033840926 + 11959033840927.

It is an arithmetic number, because the mean of its divisors is an integer number (11959033840927).

Almost surely, 2^{23918067681853} is an apocalyptic number.

It is an amenable number.

23918067681853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23918067681853 is an equidigital number, since it uses as much as digits as its factorization.

23918067681853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 23918067681853 in words is "twenty-three trillion, nine hundred eighteen billion, sixty-seven million, six hundred eighty-one thousand, eight hundred fifty-three".