133656409372 has 24 divisors (see below), whose sum is σ = 234648333920. Its totient is φ = 66614123520.

The previous prime is 133656409309. The next prime is 133656409391. The reversal of 133656409372 is 273904656331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7433329 + ... + 7451287.

Almost surely, 2^133656409372 is an apocalyptic number.

It is an amenable number.

133656409372 is a deficient number, since it is larger than the sum of its proper divisors (100991924548).

133656409372 is a wasteful number, since it uses less digits than its factorization.

133656409372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23821 (or 23819 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 49.

The spelling of 133656409372 in words is "one hundred thirty-three billion, six hundred fifty-six million, four hundred nine thousand, three hundred seventy-two".