133456413620665 has 8 divisors (see below), whose sum is σ = 160147771616520. Its totient is φ = 106765080715392.

The previous prime is 133456413620609. The next prime is 133456413620681. The reversal of 133456413620665 is 566026314654331.

It can be written as a sum of positive squares in 4 ways, for example, as 13466932951824 + 119989480668841 = 3669732^2 + 10953971^2 .

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 133456413620665 - 2¹¹ = 133456413618617 is a prime.

It is a super-2 number, since 2×133456413620665² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8661447 + ... + 18491443.

It is an arithmetic number, because the mean of its divisors is an integer number (20018471452065).

Almost surely, 2^{133456413620665} is an apocalyptic number.

It is an amenable number.

133456413620665 is a deficient number, since it is larger than the sum of its proper divisors (26691357995855).

133456413620665 is an equidigital number, since it uses as much as digits as its factorization.

133456413620665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12545291.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 133456413620665 in words is "one hundred thirty-three trillion, four hundred fifty-six billion, four hundred thirteen million, six hundred twenty thousand, six hundred sixty-five".