65196882081646 has 16 divisors (see below), whose sum is σ = 111766741074144. Its totient is φ = 27941356515744.

The previous prime is 65196882081637. The next prime is 65196882081649. The reversal of 65196882081646 is 64618028869156.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65196882081649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11217765 + ... + 16007248.

It is an arithmetic number, because the mean of its divisors is an integer number (6985421317134).

Almost surely, 2^{65196882081646} is an apocalyptic number.

65196882081646 is a deficient number, since it is larger than the sum of its proper divisors (46569858992498).

65196882081646 is a wasteful number, since it uses less digits than its factorization.

65196882081646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27396075.

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 65196882081646 in words is "sixty-five trillion, one hundred ninety-six billion, eight hundred eighty-two million, eighty-one thousand, six hundred forty-six".