29709679668 has 24 divisors (see below), whose sum is σ = 70797535872. Its totient is φ = 9692519424.

The previous prime is 29709679663. The next prime is 29709679673. The reversal of 29709679668 is 86697690792.

It is an interprime number because it is at equal distance from previous prime (29709679663) and next prime (29709679673).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29709679663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26337805 + ... + 26338932.

It is an arithmetic number, because the mean of its divisors is an integer number (2949897328).

Almost surely, 2^29709679668 is an apocalyptic number.

It is an amenable number.

29709679668 is an abundant number, since it is smaller than the sum of its proper divisors (41087856204).

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

29709679668 is a wasteful number, since it uses less digits than its factorization.

29709679668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52676791 (or 52676789 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 69.

The spelling of 29709679668 in words is "twenty-nine billion, seven hundred nine million, six hundred seventy-nine thousand, six hundred sixty-eight".