2063558107081 has 27 divisors (see below), whose sum is σ = 2153603090919. Its totient is φ = 1977210987600.

The previous prime is 2063558107067. The next prime is 2063558107133. The reversal of 2063558107081 is 1807018553602.

The square root of 2063558107081 is 1436509.

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., 241760039481 + 1821798067600 = 491691^2 + 1349740^2 .

It is not a de Polignac number, because 2063558107081 - 2⁵ = 2063558107049 is a prime.

It is a super-2 number, since 2×2063558107081² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2063558507081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6635234916 + ... + 6635235226.

Almost surely, 2^{2063558107081} is an apocalyptic number.

2063558107081 is the 1436509-th square number.

2063558107081 is the 718255-th centered octagonal number.

It is an amenable number.

2063558107081 is a deficient number, since it is larger than the sum of its proper divisors (90044983838).

2063558107081 is an frugal number, since it uses more digits than its factorization.

2063558107081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 2063558107081 in words is "two trillion, sixty-three billion, five hundred fifty-eight million, one hundred seven thousand, eighty-one".