133573721367 has 8 divisors (see below), whose sum is σ = 178626778096. Its totient is φ = 88784906112.

The previous prime is 133573721299. The next prime is 133573721371. The reversal of 133573721367 is 763127375331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133573721367 - 2²⁰ = 133572672791 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 (133573721467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66059188 + ... + 66061209.

It is an arithmetic number, because the mean of its divisors is an integer number (22328347262).

Almost surely, 2^133573721367 is an apocalyptic number.

133573721367 is a deficient number, since it is larger than the sum of its proper divisors (45053056729).

133573721367 is a wasteful number, since it uses less digits than its factorization.

133573721367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132120737.

The product of its digits is 1666980, while the sum is 48.

The spelling of 133573721367 in words is "one hundred thirty-three billion, five hundred seventy-three million, seven hundred twenty-one thousand, three hundred sixty-seven".