424748075561 has 4 divisors (see below), whose sum is σ = 424749720324. Its totient is φ = 424746430800.

The previous prime is 424748075509. The next prime is 424748075567. The reversal of 424748075561 is 165570847424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147671118400 + 277076957161 = 384280^2 + 526381^2 .

It is a cyclic number.

It is not a de Polignac number, because 424748075561 - 2⁶ = 424748075497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424748075567) 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, 341150 + ... + 982791.

It is an arithmetic number, because the mean of its divisors is an integer number (106187430081).

Almost surely, 2^424748075561 is an apocalyptic number.

It is an amenable number.

424748075561 is a deficient number, since it is larger than the sum of its proper divisors (1644763).

424748075561 is a wasteful number, since it uses less digits than its factorization.

424748075561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644762.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 424748075561 in words is "four hundred twenty-four billion, seven hundred forty-eight million, seventy-five thousand, five hundred sixty-one".