133565056444550 has 48 divisors (see below), whose sum is σ = 263065322063232. Its totient is φ = 50279352921600.

The previous prime is 133565056444529. The next prime is 133565056444577. The reversal of 133565056444550 is 55444650565331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4612580 + ... + 16982520.

It is an arithmetic number, because the mean of its divisors is an integer number (5480527542984).

Almost surely, 2^{133565056444550} is an apocalyptic number.

133565056444550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133565056444550 is a deficient number, since it is larger than the sum of its proper divisors (129500265618682).

133565056444550 is a wasteful number, since it uses less digits than its factorization.

133565056444550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382673 (or 12382668 counting only the distinct ones).

The product of its (nonzero) digits is 64800000, while the sum is 56.

The spelling of 133565056444550 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, fifty-six million, four hundred forty-four thousand, five hundred fifty".