6512651385 has 32 divisors (see below), whose sum is σ = 10717254912. Its totient is φ = 3374680320.

The previous prime is 6512651297. The next prime is 6512651393. The reversal of 6512651385 is 5831562156.

It is a happy number.

It is not a de Polignac number, because 6512651385 - 2¹¹ = 6512649337 is a prime.

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, 395415 + ... + 411555.

It is an arithmetic number, because the mean of its divisors is an integer number (334914216).

Almost surely, 2^6512651385 is an apocalyptic number.

It is an amenable number.

6512651385 is a deficient number, since it is larger than the sum of its proper divisors (4204603527).

6512651385 is a wasteful number, since it uses less digits than its factorization.

6512651385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16913.

The product of its digits is 216000, while the sum is 42.

The square root of 6512651385 is about 80700.9999008686. Note that the first 4 decimals coincide. The cubic root of 6512651385 is about 1867.4655997420.

The spelling of 6512651385 in words is "six billion, five hundred twelve million, six hundred fifty-one thousand, three hundred eighty-five".