29028205655089 has 3 divisors (see below), whose sum is σ = 29028211042873. Its totient is φ = 29028200267306.

The previous prime is 29028205655069. The next prime is 29028205655093. The reversal of 29028205655089 is 98055650282092.

The square root of 29028205655089 is 5387783.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 29028205655089 - 2⁹ = 29028205654577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29028205655069) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2693892 + ... + 8081674.

Almost surely, 2^{29028205655089} is an apocalyptic number.

29028205655089 is the 5387783-rd square number.

29028205655089 is the 2693892-nd centered octagonal number.

It is an amenable number.

29028205655089 is a deficient number, since it is larger than the sum of its proper divisors (5387784).

29028205655089 is an frugal number, since it uses more digits than its factorization.

29028205655089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775566 (or 5387783 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 29028205655089 in words is "twenty-nine trillion, twenty-eight billion, two hundred five million, six hundred fifty-five thousand, eighty-nine".