133565642032040 has 64 divisors (see below), whose sum is σ = 313600709583360. Its totient is φ = 51101451343360.

The previous prime is 133565642031979. The next prime is 133565642032049. The reversal of 133565642032040 is 40230246565331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133565642031982 and 133565642032000.

It is not an unprimeable number, because it can be changed into a prime (133565642032049) 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, 21825857 + ... + 27267183.

It is an arithmetic number, because the mean of its divisors is an integer number (4900011087240).

Almost surely, 2^{133565642032040} is an apocalyptic number.

133565642032040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133565642032040 is an abundant number, since it is smaller than the sum of its proper divisors (180035067551320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133565642032040 is a wasteful number, since it uses less digits than its factorization.

133565642032040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468042 (or 5468038 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 133565642032040 its reverse (40230246565331), we get a palindrome (173795888597371).

The spelling of 133565642032040 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, six hundred forty-two million, thirty-two thousand, forty".