29989695768 has 32 divisors (see below), whose sum is σ = 78233990400. Its totient is φ = 9561931808.

The previous prime is 29989695761. The next prime is 29989695809. The reversal of 29989695768 is 86759698992.

It is a junction number, because it is equal to n+sod(n) for n = 29989695693 and 29989695702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29989695761) 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, 27164028 + ... + 27165131.

It is an arithmetic number, because the mean of its divisors is an integer number (2444812200).

Almost surely, 2^29989695768 is an apocalyptic number.

It is an amenable number.

29989695768 is an abundant number, since it is smaller than the sum of its proper divisors (48244294632).

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

29989695768 is a wasteful number, since it uses less digits than its factorization.

29989695768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54329191 (or 54329187 counting only the distinct ones).

The product of its digits is 1058158080, while the sum is 78.

The spelling of 29989695768 in words is "twenty-nine billion, nine hundred eighty-nine million, six hundred ninety-five thousand, seven hundred sixty-eight".