563789237881 has 9 divisors (see below), whose sum is σ = 565176473199. Its totient is φ = 562405404744.

The previous prime is 563789237831. The next prime is 563789237897. The reversal of 563789237881 is 188732987365.

The square root of 563789237881 is 750859.

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

It can be written as a sum of positive squares in only one way, i.e., 425788875625 + 138000362256 = 652525^2 + 371484^2 .

It is not a de Polignac number, because 563789237881 - 2³⁵ = 529429499513 is a prime.

It is a super-2 number, since 2×563789237881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (563789237831) 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, 455770795 + ... + 455772031.

It is an arithmetic number, because the mean of its divisors is an integer number (62797385911).

Almost surely, 2^563789237881 is an apocalyptic number.

563789237881 is the 750859-th square number.

563789237881 is the 375430-th centered octagonal number.

It is an amenable number.

563789237881 is a deficient number, since it is larger than the sum of its proper divisors (1387235318).

563789237881 is an frugal number, since it uses more digits than its factorization.

563789237881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 1844 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 67.

The spelling of 563789237881 in words is "five hundred sixty-three billion, seven hundred eighty-nine million, two hundred thirty-seven thousand, eight hundred eighty-one".