7444232561 has 4 divisors (see below), whose sum is σ = 7882128612. Its totient is φ = 7006336512.

The previous prime is 7444232557. The next prime is 7444232591. The reversal of 7444232561 is 1652324447.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1652324447 = 3923 ⋅421189.

It can be written as a sum of positive squares in 2 ways, for example, as 2132592400 + 5311640161 = 46180^2 + 72881^2 .

It is a cyclic number.

It is not a de Polignac number, because 7444232561 - 2² = 7444232557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7444232591) 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, 218948000 + ... + 218948033.

It is an arithmetic number, because the mean of its divisors is an integer number (1970532153).

Almost surely, 2^7444232561 is an apocalyptic number.

It is an amenable number.

7444232561 is a deficient number, since it is larger than the sum of its proper divisors (437896051).

7444232561 is a wasteful number, since it uses less digits than its factorization.

7444232561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437896050.

The product of its digits is 161280, while the sum is 38.

The square root of 7444232561 is about 86279.9661624876. The cubic root of 7444232561 is about 1952.5701425441.

The spelling of 7444232561 in words is "seven billion, four hundred forty-four million, two hundred thirty-two thousand, five hundred sixty-one".