10206563621563 has 4 divisors (see below), whose sum is σ = 10207485551488. Its totient is φ = 10205641691640.

The previous prime is 10206563621543. The next prime is 10206563621591. The reversal of 10206563621563 is 36512636560201.

10206563621563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10206563621563 - 2²⁵ = 10206530067131 is a prime.

It is a super-2 number, since 2×10206563621563² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10206563621543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460948356 + ... + 460970497.

It is an arithmetic number, because the mean of its divisors is an integer number (2551871387872).

Almost surely, 2^{10206563621563} is an apocalyptic number.

10206563621563 is a deficient number, since it is larger than the sum of its proper divisors (921929925).

10206563621563 is an equidigital number, since it uses as much as digits as its factorization.

10206563621563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921929924.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 10206563621563 in words is "ten trillion, two hundred six billion, five hundred sixty-three million, six hundred twenty-one thousand, five hundred sixty-three".