6386557845 has 32 divisors (see below), whose sum is σ = 10554015744. Its totient is φ = 3294446400.

The previous prime is 6386557831. The next prime is 6386557873. The reversal of 6386557845 is 5487556836.

It is not a de Polignac number, because 6386557845 - 2⁶ = 6386557781 is a prime.

It is a super-3 number, since 3×6386557845³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1319580 + ... + 1324410.

It is an arithmetic number, because the mean of its divisors is an integer number (329812992).

Almost surely, 2^6386557845 is an apocalyptic number.

It is an amenable number.

6386557845 is a deficient number, since it is larger than the sum of its proper divisors (4167457899).

6386557845 is a wasteful number, since it uses less digits than its factorization.

6386557845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713.

The product of its digits is 24192000, while the sum is 57.

The square root of 6386557845 is about 79915.9423707185. The cubic root of 6386557845 is about 1855.3347690771.

The spelling of 6386557845 in words is "six billion, three hundred eighty-six million, five hundred fifty-seven thousand, eight hundred forty-five".