6515790812 has 12 divisors (see below), whose sum is σ = 11403981960. Its totient is φ = 3257510256.

The previous prime is 6515790781. The next prime is 6515790833. The reversal of 6515790812 is 2180975156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56387 + ... + 127322.

It is an arithmetic number, because the mean of its divisors is an integer number (950331830).

Almost surely, 2^6515790812 is an apocalyptic number.

It is an amenable number.

6515790812 is a deficient number, since it is larger than the sum of its proper divisors (4888191148).

6515790812 is a wasteful number, since it uses less digits than its factorization.

6515790812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192580 (or 192578 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 44.

The square root of 6515790812 is about 80720.4485369104. The cubic root of 6515790812 is about 1867.7656224608.

The spelling of 6515790812 in words is "six billion, five hundred fifteen million, seven hundred ninety thousand, eight hundred twelve".