729121928955 has 16 divisors (see below), whose sum is σ = 1333251527424. Its totient is φ = 333312881760.

The previous prime is 729121928911. The next prime is 729121928989. The reversal of 729121928955 is 559829121927.

It is not a de Polignac number, because 729121928955 - 2¹⁰ = 729121927931 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 3472009081 + ... + 3472009290.

It is an arithmetic number, because the mean of its divisors is an integer number (83328220464).

Almost surely, 2^729121928955 is an apocalyptic number.

729121928955 is a deficient number, since it is larger than the sum of its proper divisors (604129598469).

729121928955 is a wasteful number, since it uses less digits than its factorization.

729121928955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944018386.

The product of its digits is 8164800, while the sum is 60.

The spelling of 729121928955 in words is "seven hundred twenty-nine billion, one hundred twenty-one million, nine hundred twenty-eight thousand, nine hundred fifty-five".