29491685629968 has 20 divisors (see below), whose sum is σ = 76186854544208. Its totient is φ = 9830561876640.

The previous prime is 29491685629961. The next prime is 29491685629993. The reversal of 29491685629968 is 86992658619492.

It is a super-2 number, since 2×29491685629968² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29491685629961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307205058598 + ... + 307205058693.

Almost surely, 2^{29491685629968} is an apocalyptic number.

It is an amenable number.

29491685629968 is an abundant number, since it is smaller than the sum of its proper divisors (46695168914240).

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

29491685629968 is a wasteful number, since it uses less digits than its factorization.

29491685629968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614410117302 (or 614410117296 counting only the distinct ones).

The product of its digits is 7255941120, while the sum is 84.

The spelling of 29491685629968 in words is "twenty-nine trillion, four hundred ninety-one billion, six hundred eighty-five million, six hundred twenty-nine thousand, nine hundred sixty-eight".