10563531811 has 4 divisors (see below), whose sum is σ = 12072607792. Its totient is φ = 9054455832.

The previous prime is 10563531799. The next prime is 10563531899. The reversal of 10563531811 is 11813536501.

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 10563531811 - 2⁹ = 10563531299 is a prime.

It is a super-2 number, since 2×10563531811² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10563531911) 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, 754537980 + ... + 754537993.

It is an arithmetic number, because the mean of its divisors is an integer number (3018151948).

Almost surely, 2^10563531811 is an apocalyptic number.

10563531811 is a deficient number, since it is larger than the sum of its proper divisors (1509075981).

10563531811 is an equidigital number, since it uses as much as digits as its factorization.

10563531811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509075980.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 10563531811 in words is "ten billion, five hundred sixty-three million, five hundred thirty-one thousand, eight hundred eleven".