29685317986 has 16 divisors (see below), whose sum is σ = 45685045728. Its totient is φ = 14458096800.

The previous prime is 29685317927. The next prime is 29685318031. The reversal of 29685317986 is 68971358692.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228780 + ... + 334231.

It is an arithmetic number, because the mean of its divisors is an integer number (2855315358).

Almost surely, 2^29685317986 is an apocalyptic number.

29685317986 is a deficient number, since it is larger than the sum of its proper divisors (15999727742).

29685317986 is a wasteful number, since it uses less digits than its factorization.

29685317986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563697.

The product of its digits is 39191040, while the sum is 64.

The spelling of 29685317986 in words is "twenty-nine billion, six hundred eighty-five million, three hundred seventeen thousand, nine hundred eighty-six".