133100466121561 has 4 divisors (see below), whose sum is σ = 134116500214224. Its totient is φ = 132084432028900.

The previous prime is 133100466121537. The next prime is 133100466121669. The reversal of 133100466121561 is 165121664001331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133100466121561 - 2³¹ = 133098318637913 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133100466121531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508017046135 + ... + 508017046396.

It is an arithmetic number, because the mean of its divisors is an integer number (33529125053556).

Almost surely, 2^{133100466121561} is an apocalyptic number.

It is an amenable number.

133100466121561 is a deficient number, since it is larger than the sum of its proper divisors (1016034092663).

133100466121561 is a wasteful number, since it uses less digits than its factorization.

133100466121561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016034092662.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 133100466121561 in words is "one hundred thirty-three trillion, one hundred billion, four hundred sixty-six million, one hundred twenty-one thousand, five hundred sixty-one".