7145643545 has 4 divisors (see below), whose sum is σ = 8574772260. Its totient is φ = 5716514832.

The previous prime is 7145643509. The next prime is 7145643563. The reversal of 7145643545 is 5453465417.

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 1266434569 + 5879208976 = 35587^2 + 76676^2 .

It is a cyclic number.

It is not a de Polignac number, because 7145643545 - 2¹⁶ = 7145578009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7145643496 and 7145643505.

It is an unprimeable number.

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, 714564350 + ... + 714564359.

It is an arithmetic number, because the mean of its divisors is an integer number (2143693065).

Almost surely, 2^7145643545 is an apocalyptic number.

It is an amenable number.

7145643545 is a deficient number, since it is larger than the sum of its proper divisors (1429128715).

7145643545 is a wasteful number, since it uses less digits than its factorization.

7145643545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429128714.

The product of its digits is 1008000, while the sum is 44.

The square root of 7145643545 is about 84531.9084429069. The cubic root of 7145643545 is about 1926.1071762003.

The spelling of 7145643545 in words is "seven billion, one hundred forty-five million, six hundred forty-three thousand, five hundred forty-five".