29404445643 has 12 divisors (see below), whose sum is σ = 42480999288. Its totient is φ = 19599312480.

The previous prime is 29404445549. The next prime is 29404445699. The reversal of 29404445643 is 34654440492.

29404445643 is a `hidden beast` number, since 2 + 9 + 40 + 4 + 44 + 564 + 3 = 666.

It is not a de Polignac number, because 29404445643 - 2⁸ = 29404445387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29404445443) 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 11 ways as a sum of consecutive naturals, for example, 252813 + ... + 350318.

It is an arithmetic number, because the mean of its divisors is an integer number (3540083274).

Almost surely, 2^29404445643 is an apocalyptic number.

29404445643 is a deficient number, since it is larger than the sum of its proper divisors (13076553645).

29404445643 is a wasteful number, since it uses less digits than its factorization.

29404445643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608554 (or 608551 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 29404445643 in words is "twenty-nine billion, four hundred four million, four hundred forty-five thousand, six hundred forty-three".