6511650065078 has 16 divisors (see below), whose sum is σ = 9785462446080. Its totient is φ = 3249830005416.

The previous prime is 6511650065077. The next prime is 6511650065113. The reversal of 6511650065078 is 8705600561156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511650065077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17843243 + ... + 18204521.

It is an arithmetic number, because the mean of its divisors is an integer number (611591402880).

Almost surely, 2^{6511650065078} is an apocalyptic number.

6511650065078 is a deficient number, since it is larger than the sum of its proper divisors (3273812381002).

6511650065078 is a wasteful number, since it uses less digits than its factorization.

6511650065078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377851.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 6511650065078 in words is "six trillion, five hundred eleven billion, six hundred fifty million, sixty-five thousand, seventy-eight".