133531405431064 has 16 divisors (see below), whose sum is σ = 250371963316800. Its totient is φ = 66765548546592.

The previous prime is 133531405431029. The next prime is 133531405431071. The reversal of 133531405431064 is 460134504135331.

It is a self number, because there is not a number n which added to its sum of digits gives 133531405431064.

It is a congruent number.

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, 15547719 + ... + 22556470.

It is an arithmetic number, because the mean of its divisors is an integer number (15648247707300).

Almost surely, 2^{133531405431064} is an apocalyptic number.

It is an amenable number.

133531405431064 is a deficient number, since it is larger than the sum of its proper divisors (116840557885736).

133531405431064 is a wasteful number, since it uses less digits than its factorization.

133531405431064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38542242 (or 38542238 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 133531405431064 its reverse (460134504135331), we get a palindrome (593665909566395).

The spelling of 133531405431064 in words is "one hundred thirty-three trillion, five hundred thirty-one billion, four hundred five million, four hundred thirty-one thousand, sixty-four".