133723209727 has 16 divisors (see below), whose sum is σ = 140387869440. Its totient is φ = 127207406592.

The previous prime is 133723209709. The next prime is 133723209811. The reversal of 133723209727 is 727902327331.

It is a cyclic number.

It is not a de Polignac number, because 133723209727 - 2³⁵ = 99363471359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133723209707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520713 + ... + 733885.

It is an arithmetic number, because the mean of its divisors is an integer number (8774241840).

Almost surely, 2^133723209727 is an apocalyptic number.

133723209727 is a deficient number, since it is larger than the sum of its proper divisors (6664659713).

133723209727 is a wasteful number, since it uses less digits than its factorization.

133723209727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213522.

The product of its (nonzero) digits is 666792, while the sum is 46.

The spelling of 133723209727 in words is "one hundred thirty-three billion, seven hundred twenty-three million, two hundred nine thousand, seven hundred twenty-seven".