727965728109 has 12 divisors (see below), whose sum is σ = 1064174800416. Its totient is φ = 479463370632.

The previous prime is 727965728099. The next prime is 727965728141. The reversal of 727965728109 is 901827569727.

It is not a de Polignac number, because 727965728109 - 2⁴ = 727965728093 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727965728209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487258777 + ... + 487260270.

It is an arithmetic number, because the mean of its divisors is an integer number (88681233368).

Almost surely, 2^727965728109 is an apocalyptic number.

It is an amenable number.

727965728109 is a deficient number, since it is larger than the sum of its proper divisors (336209072307).

727965728109 is a wasteful number, since it uses less digits than its factorization.

727965728109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974519136 (or 974519133 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 727965728109 in words is "seven hundred twenty-seven billion, nine hundred sixty-five million, seven hundred twenty-eight thousand, one hundred nine".