29627856138 has 16 divisors (see below), whose sum is σ = 59273670240. Its totient is φ = 9872959056.

The previous prime is 29627856133. The next prime is 29627856151. The reversal of 29627856138 is 83165872692.

It is not an unprimeable number, because it can be changed into a prime (29627856133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726753 + ... + 766436.

It is an arithmetic number, because the mean of its divisors is an integer number (3704604390).

Almost surely, 2^29627856138 is an apocalyptic number.

29627856138 is an abundant number, since it is smaller than the sum of its proper divisors (29645814102).

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

29627856138 is a wasteful number, since it uses less digits than its factorization.

29627856138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496501.

The product of its digits is 8709120, while the sum is 57.

The spelling of 29627856138 in words is "twenty-nine billion, six hundred twenty-seven million, eight hundred fifty-six thousand, one hundred thirty-eight".