10561243403 has 16 divisors (see below), whose sum is σ = 11034424800. Its totient is φ = 10095536640.

The previous prime is 10561243367. The next prime is 10561243409. The reversal of 10561243403 is 30434216501.

It is a cyclic number.

It is not a de Polignac number, because 10561243403 - 2²⁴ = 10544466187 is a prime.

It is a super-2 number, since 2×10561243403² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10561243409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5468348 + ... + 5470278.

It is an arithmetic number, because the mean of its divisors is an integer number (689651550).

Almost surely, 2^10561243403 is an apocalyptic number.

10561243403 is a deficient number, since it is larger than the sum of its proper divisors (473181397).

10561243403 is a wasteful number, since it uses less digits than its factorization.

10561243403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 10561243403 its reverse (30434216501), we get a palindrome (40995459904).

The spelling of 10561243403 in words is "ten billion, five hundred sixty-one million, two hundred forty-three thousand, four hundred three".