133252720969 has 4 divisors (see below), whose sum is σ = 133253488144. Its totient is φ = 133251953796.

The previous prime is 133252720897. The next prime is 133252720981. The reversal of 133252720969 is 969027252331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133252720969 - 2⁷ = 133252720841 is a prime.

It is a super-2 number, since 2×133252720969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133252720369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15034 + ... + 516460.

It is an arithmetic number, because the mean of its divisors is an integer number (33313372036).

Almost surely, 2^133252720969 is an apocalyptic number.

It is an amenable number.

133252720969 is a deficient number, since it is larger than the sum of its proper divisors (767175).

133252720969 is an equidigital number, since it uses as much as digits as its factorization.

133252720969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767174.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 133252720969 in words is "one hundred thirty-three billion, two hundred fifty-two million, seven hundred twenty thousand, nine hundred sixty-nine".