29885789938718 has 48 divisors (see below), whose sum is σ = 55227314797200. Its totient is φ = 12052119373056.

The previous prime is 29885789938657. The next prime is 29885789938747. The reversal of 29885789938718 is 81783998758892.

It is a happy number.

It is a super-2 number, since 2×29885789938718² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5606921 + ... + 9550347.

It is an arithmetic number, because the mean of its divisors is an integer number (1150569058275).

Almost surely, 2^{29885789938718} is an apocalyptic number.

29885789938718 is a deficient number, since it is larger than the sum of its proper divisors (25341524858482).

29885789938718 is a wasteful number, since it uses less digits than its factorization.

29885789938718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3948009 (or 3948002 counting only the distinct ones).

The product of its digits is 35115171840, while the sum is 92.

The spelling of 29885789938718 in words is "twenty-nine trillion, eight hundred eighty-five billion, seven hundred eighty-nine million, nine hundred thirty-eight thousand, seven hundred eighteen".