133642423265 has 16 divisors (see below), whose sum is σ = 174383908608. Its totient is φ = 97731631296.

The previous prime is 133642423261. The next prime is 133642423309. The reversal of 133642423265 is 562324246331.

It is not a de Polignac number, because 133642423265 - 2² = 133642423261 is a prime.

It is a super-2 number, since 2×133642423265² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133642423261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9974069 + ... + 9987458.

It is an arithmetic number, because the mean of its divisors is an integer number (10898994288).

Almost surely, 2^133642423265 is an apocalyptic number.

It is an amenable number.

133642423265 is a deficient number, since it is larger than the sum of its proper divisors (40741485343).

133642423265 is a wasteful number, since it uses less digits than its factorization.

133642423265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19961648.

The product of its digits is 622080, while the sum is 41.

Adding to 133642423265 its reverse (562324246331), we get a palindrome (695966669596).

The spelling of 133642423265 in words is "one hundred thirty-three billion, six hundred forty-two million, four hundred twenty-three thousand, two hundred sixty-five".