133123531252065 has 64 divisors (see below), whose sum is σ = 226746472296960. Its totient is φ = 66544276930560.

The previous prime is 133123531252021. The next prime is 133123531252081. The reversal of 133123531252065 is 560252135321331.

It is not a de Polignac number, because 133123531252065 - 2⁷ = 133123531251937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9327435 + ... + 18794895.

It is an arithmetic number, because the mean of its divisors is an integer number (3542913629640).

Almost surely, 2^{133123531252065} is an apocalyptic number.

133123531252065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133123531252065 is a deficient number, since it is larger than the sum of its proper divisors (93622941044895).

133123531252065 is a wasteful number, since it uses less digits than its factorization.

133123531252065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9468314.

The product of its (nonzero) digits is 486000, while the sum is 42.

Adding to 133123531252065 its reverse (560252135321331), we get a palindrome (693375666573396).

The spelling of 133123531252065 in words is "one hundred thirty-three trillion, one hundred twenty-three billion, five hundred thirty-one million, two hundred fifty-two thousand, sixty-five".