133506564455 has 16 divisors (see below), whose sum is σ = 174828453408. Its totient is φ = 97064448000.

The previous prime is 133506564409. The next prime is 133506564461. The reversal of 133506564455 is 554465605331.

It is not a de Polignac number, because 133506564455 - 2⁶ = 133506564391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217226 + ... + 560535.

It is an arithmetic number, because the mean of its divisors is an integer number (10926778338).

Almost surely, 2^133506564455 is an apocalyptic number.

133506564455 is a deficient number, since it is larger than the sum of its proper divisors (41321888953).

133506564455 is a wasteful number, since it uses less digits than its factorization.

133506564455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780898.

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 133506564455 in words is "one hundred thirty-three billion, five hundred six million, five hundred sixty-four thousand, four hundred fifty-five".