29128103661889 has 8 divisors (see below), whose sum is σ = 29847861160992. Its totient is φ = 28408789779360.

The previous prime is 29128103661851. The next prime is 29128103661907. The reversal of 29128103661889 is 98816630182192.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29128103661889 - 2¹³ = 29128103653697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29128103661889.

It is not an unprimeable number, because it can be changed into a prime (29128103665889) 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, 110771199 + ... + 111033844.

It is an arithmetic number, because the mean of its divisors is an integer number (3730982645124).

Almost surely, 2^{29128103661889} is an apocalyptic number.

It is an amenable number.

29128103661889 is a deficient number, since it is larger than the sum of its proper divisors (719757499103).

29128103661889 is a wasteful number, since it uses less digits than its factorization.

29128103661889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221808287.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 29128103661889 in words is "twenty-nine trillion, one hundred twenty-eight billion, one hundred three million, six hundred sixty-one thousand, eight hundred eighty-nine".