50928390506569 has 9 divisors (see below), whose sum is σ = 54100529863477. Its totient is φ = 47932488647104.

The previous prime is 50928390506557. The next prime is 50928390506633. The reversal of 50928390506569 is 96560509382905.

The square root of 50928390506569 is 7136413.

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

It can be written as a sum of positive squares in 4 ways, for example, as 316378125625 + 50612012380944 = 562475^2 + 7114212^2 .

It is not a de Polignac number, because 50928390506569 - 2¹¹ = 50928390504521 is a prime.

It is a super-2 number, since 2×50928390506569² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50928390506519) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 121109127 + ... + 121528915.

Almost surely, 2^{50928390506569} is an apocalyptic number.

50928390506569 is the 7136413-rd square number.

50928390506569 is the 3568207-th centered octagonal number.

It is an amenable number.

50928390506569 is a deficient number, since it is larger than the sum of its proper divisors (3172139356908).

50928390506569 is an frugal number, since it uses more digits than its factorization.

50928390506569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839612 (or 419806 counting only the distinct ones).

The product of its (nonzero) digits is 157464000, while the sum is 67.

The spelling of 50928390506569 in words is "fifty trillion, nine hundred twenty-eight billion, three hundred ninety million, five hundred six thousand, five hundred sixty-nine".