133606666355 has 4 divisors (see below), whose sum is σ = 160327999632. Its totient is φ = 106885333080.

The previous prime is 133606666313. The next prime is 133606666399. The reversal of 133606666355 is 553666606331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553666606331 = 643 ⋅861067817.

It is not a de Polignac number, because 133606666355 - 2³⁴ = 116426797171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13360666631 + ... + 13360666640.

It is an arithmetic number, because the mean of its divisors is an integer number (40081999908).

Almost surely, 2^133606666355 is an apocalyptic number.

133606666355 is a deficient number, since it is larger than the sum of its proper divisors (26721333277).

133606666355 is an equidigital number, since it uses as much as digits as its factorization.

133606666355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26721333276.

The product of its (nonzero) digits is 5248800, while the sum is 50.

The spelling of 133606666355 in words is "one hundred thirty-three billion, six hundred six million, six hundred sixty-six thousand, three hundred fifty-five".