65815656038 has 16 divisors (see below), whose sum is σ = 107762021136. Its totient is φ = 29898519840.

The previous prime is 65815656037. The next prime is 65815656047. The reversal of 65815656038 is 83065651856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65815656037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846281 + ... + 920772.

It is an arithmetic number, because the mean of its divisors is an integer number (6735126321).

Almost surely, 2^65815656038 is an apocalyptic number.

65815656038 is a deficient number, since it is larger than the sum of its proper divisors (41946365098).

65815656038 is a wasteful number, since it uses less digits than its factorization.

65815656038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768759.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 65815656038 in words is "sixty-five billion, eight hundred fifteen million, six hundred fifty-six thousand, thirty-eight".