133265431345 has 4 divisors (see below), whose sum is σ = 159918517620. Its totient is φ = 106612345072.

The previous prime is 133265431331. The next prime is 133265431469. The reversal of 133265431345 is 543134562331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543134562331 = 223 ⋅2435580997.

It can be written as a sum of positive squares in 2 ways, for example, as 71789700096 + 61475731249 = 267936^2 + 247943^2 .

It is a cyclic number.

It is not a de Polignac number, because 133265431345 - 2⁷ = 133265431217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133265431298 and 133265431307.

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, 13326543130 + ... + 13326543139.

It is an arithmetic number, because the mean of its divisors is an integer number (39979629405).

Almost surely, 2^133265431345 is an apocalyptic number.

It is an amenable number.

133265431345 is a deficient number, since it is larger than the sum of its proper divisors (26653086275).

133265431345 is an equidigital number, since it uses as much as digits as its factorization.

133265431345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26653086274.

The product of its digits is 388800, while the sum is 40.

Adding to 133265431345 its reverse (543134562331), we get a palindrome (676399993676).

The spelling of 133265431345 in words is "one hundred thirty-three billion, two hundred sixty-five million, four hundred thirty-one thousand, three hundred forty-five".