563155690969 has 3 divisors (see below), whose sum is σ = 563156441407. Its totient is φ = 563154940532.

The previous prime is 563155690963. The next prime is 563155690973. The reversal of 563155690969 is 969096551365.

The square root of 563155690969 is 750437.

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, and also an emirpimes, since its reverse is a distinct semiprime: 969096551365 = 5 ⋅193819310273.

It can be written as a sum of positive squares in only one way, i.e., 36387470025 + 526768220944 = 190755^2 + 725788^2 .

It is not a de Polignac number, because 563155690969 - 2³ = 563155690961 is a prime.

It is a super-2 number, since 2×563155690969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 563155690969.

It is not an unprimeable number, because it can be changed into a prime (563155690961) 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, 375219 + ... + 1125655.

Almost surely, 2^563155690969 is an apocalyptic number.

563155690969 is the 750437-th square number.

563155690969 is the 375219-th centered octagonal number.

It is an amenable number.

563155690969 is a deficient number, since it is larger than the sum of its proper divisors (750438).

563155690969 is an frugal number, since it uses more digits than its factorization.

563155690969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500874 (or 750437 counting only the distinct ones).

The product of its (nonzero) digits is 59049000, while the sum is 64.

Multiplying 563155690969 by its sum of digits (64), we get a square (36041964222016 = 6003496²).

The spelling of 563155690969 in words is "five hundred sixty-three billion, one hundred fifty-five million, six hundred ninety thousand, nine hundred sixty-nine".