7128380445 has 8 divisors (see below), whose sum is σ = 11405408736. Its totient is φ = 3801802896.

The previous prime is 7128380437. The next prime is 7128380503. The reversal of 7128380445 is 5440838217.

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

It is not a de Polignac number, because 7128380445 - 2³ = 7128380437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7128380397 and 7128380406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237612667 + ... + 237612696.

It is an arithmetic number, because the mean of its divisors is an integer number (1425676092).

Almost surely, 2^7128380445 is an apocalyptic number.

It is an amenable number.

7128380445 is a deficient number, since it is larger than the sum of its proper divisors (4277028291).

7128380445 is a wasteful number, since it uses less digits than its factorization.

7128380445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475225371.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 7128380445 is about 84429.7367341626. The cubic root of 7128380445 is about 1924.5548367374.

The spelling of 7128380445 in words is "seven billion, one hundred twenty-eight million, three hundred eighty thousand, four hundred forty-five".