10423454561 has 4 divisors (see below), whose sum is σ = 11225258772. Its totient is φ = 9621650352.

The previous prime is 10423454537. The next prime is 10423454567. The reversal of 10423454561 is 16545432401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16545432401 = 2969 ⋅5572729.

It can be written as a sum of positive squares in 2 ways, for example, as 1523418961 + 8900035600 = 39031^2 + 94340^2 .

It is a cyclic number.

It is not a de Polignac number, because 10423454561 - 2⁶ = 10423454497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10423454567) 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, 400902086 + ... + 400902111.

It is an arithmetic number, because the mean of its divisors is an integer number (2806314693).

Almost surely, 2^10423454561 is an apocalyptic number.

It is an amenable number.

10423454561 is a deficient number, since it is larger than the sum of its proper divisors (801804211).

10423454561 is an equidigital number, since it uses as much as digits as its factorization.

10423454561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801804210.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 10423454561 its reverse (16545432401), we get a palindrome (26968886962).

The spelling of 10423454561 in words is "ten billion, four hundred twenty-three million, four hundred fifty-four thousand, five hundred sixty-one".