133563053215021 has 8 divisors (see below), whose sum is σ = 133633615167000. Its totient is φ = 133492493352000.

The previous prime is 133563053214911. The next prime is 133563053215027. The reversal of 133563053215021 is 120512350365331.

It can be written as a sum of positive squares in 4 ways, for example, as 75851227166121 + 57711826048900 = 8709261^2 + 7596830^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133563053215021 - 2²⁵ = 133563019660589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133563053215027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136920435 + ... + 137892463.

It is an arithmetic number, because the mean of its divisors is an integer number (16704201895875).

Almost surely, 2^{133563053215021} is an apocalyptic number.

It is an amenable number.

133563053215021 is a deficient number, since it is larger than the sum of its proper divisors (70561951979).

133563053215021 is an equidigital number, since it uses as much as digits as its factorization.

133563053215021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044479.

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 133563053215021 in words is "one hundred thirty-three trillion, five hundred sixty-three billion, fifty-three million, two hundred fifteen thousand, twenty-one".