7424667561 has 16 divisors (see below), whose sum is σ = 9932906880. Its totient is φ = 4933125120.

The previous prime is 7424667539. The next prime is 7424667571. The reversal of 7424667561 is 1657664247.

It is not a de Polignac number, because 7424667561 - 2¹⁵ = 7424634793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7424667561.

It is not an unprimeable number, because it can be changed into a prime (7424667571) 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, 2695561 + ... + 2698313.

It is an arithmetic number, because the mean of its divisors is an integer number (620806680).

Almost surely, 2^7424667561 is an apocalyptic number.

It is an amenable number.

7424667561 is a deficient number, since it is larger than the sum of its proper divisors (2508239319).

7424667561 is a wasteful number, since it uses less digits than its factorization.

7424667561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456.

The product of its digits is 1693440, while the sum is 48.

The square root of 7424667561 is about 86166.5106697492. The cubic root of 7424667561 is about 1950.8580541981.

The spelling of 7424667561 in words is "seven billion, four hundred twenty-four million, six hundred sixty-seven thousand, five hundred sixty-one".