23405251566211 has 2 divisors, whose sum is σ = 23405251566212. Its totient is φ = 23405251566210.

The previous prime is 23405251566127. The next prime is 23405251566233. The reversal of 23405251566211 is 11266515250432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23405251566211 - 2¹³ = 23405251558019 is a prime.

It is a super-3 number, since 3×23405251566211³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (23405251566611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702625783105 + 11702625783106.

It is an arithmetic number, because the mean of its divisors is an integer number (11702625783106).

Almost surely, 2^{23405251566211} is an apocalyptic number.

23405251566211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23405251566211 is an equidigital number, since it uses as much as digits as its factorization.

23405251566211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 23405251566211 in words is "twenty-three trillion, four hundred five billion, two hundred fifty-one million, five hundred sixty-six thousand, two hundred eleven".