6570445139 has 4 divisors (see below), whose sum is σ = 6694415856. Its totient is φ = 6446474424.

The previous prime is 6570445111. The next prime is 6570445153. The reversal of 6570445139 is 9315440756.

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

It is a cyclic number.

It is not a de Polignac number, because 6570445139 - 2¹² = 6570441043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6570445139.

It is not an unprimeable number, because it can be changed into a prime (6570445159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61985279 + ... + 61985384.

It is an arithmetic number, because the mean of its divisors is an integer number (1673603964).

Almost surely, 2^6570445139 is an apocalyptic number.

6570445139 is a deficient number, since it is larger than the sum of its proper divisors (123970717).

6570445139 is a wasteful number, since it uses less digits than its factorization.

6570445139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123970716.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 6570445139 is about 81058.2823590532. The cubic root of 6570445139 is about 1872.9733493275.

The spelling of 6570445139 in words is "six billion, five hundred seventy million, four hundred forty-five thousand, one hundred thirty-nine".