6585778745 has 24 divisors (see below), whose sum is σ = 9780140736. Its totient is φ = 4168577088.

The previous prime is 6585778721. The next prime is 6585778757. The reversal of 6585778745 is 5478775856.

It is not a de Polignac number, because 6585778745 - 2⁸ = 6585778489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550787 + ... + 562616.

It is an arithmetic number, because the mean of its divisors is an integer number (407505864).

Almost surely, 2^6585778745 is an apocalyptic number.

6585778745 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6585778745 is a deficient number, since it is larger than the sum of its proper divisors (3194361991).

6585778745 is a wasteful number, since it uses less digits than its factorization.

6585778745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113441 (or 1113428 counting only the distinct ones).

The product of its digits is 65856000, while the sum is 62.

The square root of 6585778745 is about 81152.8110726917. The cubic root of 6585778745 is about 1874.4292183806.

The spelling of 6585778745 in words is "six billion, five hundred eighty-five million, seven hundred seventy-eight thousand, seven hundred forty-five".