528727650721 has 16 divisors (see below), whose sum is σ = 584357255424. Its totient is φ = 475837272064.

The previous prime is 528727650643. The next prime is 528727650749. The reversal of 528727650721 is 127056727825.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 528727650721 - 2⁷ = 528727650593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528727650761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011036 + ... + 1442098.

It is an arithmetic number, because the mean of its divisors is an integer number (36522328464).

Almost surely, 2^528727650721 is an apocalyptic number.

It is an amenable number.

528727650721 is a deficient number, since it is larger than the sum of its proper divisors (55629604703).

528727650721 is a wasteful number, since it uses less digits than its factorization.

528727650721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434240.

The product of its (nonzero) digits is 3292800, while the sum is 52.

The spelling of 528727650721 in words is "five hundred twenty-eight billion, seven hundred twenty-seven million, six hundred fifty thousand, seven hundred twenty-one".