11424626561 has 4 divisors (see below), whose sum is σ = 11425601472. Its totient is φ = 11423651652.

The previous prime is 11424626557. The next prime is 11424626579. The reversal of 11424626561 is 16562642411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11424626561 - 2² = 11424626557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11424826561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469661 + ... + 493386.

It is an arithmetic number, because the mean of its divisors is an integer number (2856400368).

Almost surely, 2^11424626561 is an apocalyptic number.

It is an amenable number.

11424626561 is a deficient number, since it is larger than the sum of its proper divisors (974911).

11424626561 is an equidigital number, since it uses as much as digits as its factorization.

11424626561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974910.

The product of its digits is 69120, while the sum is 38.

The spelling of 11424626561 in words is "eleven billion, four hundred twenty-four million, six hundred twenty-six thousand, five hundred sixty-one".