133723209707 has 2 divisors, whose sum is σ = 133723209708. Its totient is φ = 133723209706.

The previous prime is 133723209701. The next prime is 133723209709. The reversal of 133723209707 is 707902327331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133723209707 - 2⁴ = 133723209691 is a prime.

Together with 133723209709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133723209701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66861604853 + 66861604854.

It is an arithmetic number, because the mean of its divisors is an integer number (66861604854).

Almost surely, 2^133723209707 is an apocalyptic number.

133723209707 is a deficient number, since it is larger than the sum of its proper divisors (1).

133723209707 is an equidigital number, since it uses as much as digits as its factorization.

133723209707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 44.

The spelling of 133723209707 in words is "one hundred thirty-three billion, seven hundred twenty-three million, two hundred nine thousand, seven hundred seven".