133550021405 has 8 divisors (see below), whose sum is σ = 168694764000. Its totient is φ = 101216858256.

The previous prime is 133550021401. The next prime is 133550021441. The reversal of 133550021405 is 504120055331.

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

It is a cyclic number.

It is not a de Polignac number, because 133550021405 - 2² = 133550021401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133550021401) 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, 702894755 + ... + 702894944.

It is an arithmetic number, because the mean of its divisors is an integer number (21086845500).

Almost surely, 2^133550021405 is an apocalyptic number.

It is an amenable number.

133550021405 is a deficient number, since it is larger than the sum of its proper divisors (35144742595).

133550021405 is a wasteful number, since it uses less digits than its factorization.

133550021405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405789723.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 133550021405 its reverse (504120055331), we get a palindrome (637670076736).

The spelling of 133550021405 in words is "one hundred thirty-three billion, five hundred fifty million, twenty-one thousand, four hundred five".