7128395745 has 8 divisors (see below), whose sum is σ = 11405433216. Its totient is φ = 3801811056.

The previous prime is 7128395741. The next prime is 7128395759. The reversal of 7128395745 is 5475938217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7128395745 - 2² = 7128395741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7128395741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237613177 + ... + 237613206.

It is an arithmetic number, because the mean of its divisors is an integer number (1425679152).

Almost surely, 2^7128395745 is an apocalyptic number.

It is an amenable number.

7128395745 is a deficient number, since it is larger than the sum of its proper divisors (4277037471).

7128395745 is a wasteful number, since it uses less digits than its factorization.

7128395745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475226391.

The product of its digits is 2116800, while the sum is 51.

The square root of 7128395745 is about 84429.8273420004. The cubic root of 7128395745 is about 1924.5562136592.

The spelling of 7128395745 in words is "seven billion, one hundred twenty-eight million, three hundred ninety-five thousand, seven hundred forty-five".