133565406064405 has 16 divisors (see below), whose sum is σ = 184124509449984. Its totient is φ = 91113159306240.

The previous prime is 133565406064217. The next prime is 133565406064457. The reversal of 133565406064405 is 504460604565331.

It is not a de Polignac number, because 133565406064405 - 2⁹ = 133565406063893 is a prime.

It is a super-3 number, since 3×133565406064405³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9886403761 + ... + 9886417270.

It is an arithmetic number, because the mean of its divisors is an integer number (11507781840624).

Almost surely, 2^{133565406064405} is an apocalyptic number.

It is an amenable number.

133565406064405 is a deficient number, since it is larger than the sum of its proper divisors (50559103385579).

133565406064405 is a wasteful number, since it uses less digits than its factorization.

133565406064405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19772821236.

The product of its (nonzero) digits is 15552000, while the sum is 52.

The spelling of 133565406064405 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, four hundred six million, sixty-four thousand, four hundred five".