133431266447 has 2 divisors, whose sum is σ = 133431266448. Its totient is φ = 133431266446.

The previous prime is 133431266383. The next prime is 133431266489. The reversal of 133431266447 is 744662134331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133431266447 - 2⁶ = 133431266383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133431266398 and 133431266407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133431226447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66715633223 + 66715633224.

It is an arithmetic number, because the mean of its divisors is an integer number (66715633224).

Almost surely, 2^133431266447 is an apocalyptic number.

133431266447 is a deficient number, since it is larger than the sum of its proper divisors (1).

133431266447 is an equidigital number, since it uses as much as digits as its factorization.

133431266447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 44.

The spelling of 133431266447 in words is "one hundred thirty-three billion, four hundred thirty-one million, two hundred sixty-six thousand, four hundred forty-seven".