65057887815 has 16 divisors (see below), whose sum is σ = 104694316128. Its totient is φ = 34496974976.

The previous prime is 65057887757. The next prime is 65057887849. The reversal of 65057887815 is 51878875056.

It is a cyclic number.

It is not a de Polignac number, because 65057887815 - 2¹⁰ = 65057886791 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 12532644 + ... + 12537833.

It is an arithmetic number, because the mean of its divisors is an integer number (6543394758).

Almost surely, 2^65057887815 is an apocalyptic number.

65057887815 is a deficient number, since it is larger than the sum of its proper divisors (39636428313).

65057887815 is a wasteful number, since it uses less digits than its factorization.

65057887815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25070658.

The product of its (nonzero) digits is 18816000, while the sum is 60.

The spelling of 65057887815 in words is "sixty-five billion, fifty-seven million, eight hundred eighty-seven thousand, eight hundred fifteen".