29394643668 has 24 divisors (see below), whose sum is σ = 73863463968. Its totient is φ = 9044505696.

The previous prime is 29394643667. The next prime is 29394643753. The reversal of 29394643668 is 86634649392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29394643667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94213446 + ... + 94213757.

It is an arithmetic number, because the mean of its divisors is an integer number (3077644332).

Almost surely, 2^29394643668 is an apocalyptic number.

It is an amenable number.

29394643668 is an abundant number, since it is smaller than the sum of its proper divisors (44468820300).

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

29394643668 is a wasteful number, since it uses less digits than its factorization.

29394643668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188427223 (or 188427221 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 60.

The spelling of 29394643668 in words is "twenty-nine billion, three hundred ninety-four million, six hundred forty-three thousand, six hundred sixty-eight".