4545126561 has 4 divisors (see below), whose sum is σ = 6060168752. Its totient is φ = 3030084372.

The previous prime is 4545126559. The next prime is 4545126569. The reversal of 4545126561 is 1656215454.

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 not a de Polignac number, because 4545126561 - 2¹ = 4545126559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4545126569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757521091 + ... + 757521096.

It is an arithmetic number, because the mean of its divisors is an integer number (1515042188).

Almost surely, 2^4545126561 is an apocalyptic number.

It is an amenable number.

4545126561 is a deficient number, since it is larger than the sum of its proper divisors (1515042191).

4545126561 is a wasteful number, since it uses less digits than its factorization.

4545126561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515042190.

The product of its digits is 144000, while the sum is 39.

The square root of 4545126561 is about 67417.5538046287. The cubic root of 4545126561 is about 1656.4639688515.

The spelling of 4545126561 in words is "four billion, five hundred forty-five million, one hundred twenty-six thousand, five hundred sixty-one".