133233064021561 has 12 divisors (see below), whose sum is σ = 154993399704720. Its totient is φ = 114193875382440.

The previous prime is 133233064021529. The next prime is 133233064021633. The reversal of 133233064021561 is 165120460332331.

It is not a de Polignac number, because 133233064021561 - 2⁵ = 133233064021529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133233065021561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69204775 + ... + 71103916.

It is an arithmetic number, because the mean of its divisors is an integer number (12916116642060).

Almost surely, 2^{133233064021561} is an apocalyptic number.

It is an amenable number.

133233064021561 is a deficient number, since it is larger than the sum of its proper divisors (21760335683159).

133233064021561 is a wasteful number, since it uses less digits than its factorization.

133233064021561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140328084 (or 140328077 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 133233064021561 in words is "one hundred thirty-three trillion, two hundred thirty-three billion, sixty-four million, twenty-one thousand, five hundred sixty-one".