64195652673618 has 32 divisors (see below), whose sum is σ = 140631450082560. Its totient is φ = 19445336305920.

The previous prime is 64195652673617. The next prime is 64195652673671. The reversal of 64195652673618 is 81637625659146.

It is not an unprimeable number, because it can be changed into a prime (64195652673613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10851189178 + ... + 10851195093.

It is an arithmetic number, because the mean of its divisors is an integer number (4394732815080).

Almost surely, 2^{64195652673618} is an apocalyptic number.

64195652673618 is an abundant number, since it is smaller than the sum of its proper divisors (76435797408942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64195652673618 is a wasteful number, since it uses less digits than its factorization.

64195652673618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21702384322.

The product of its digits is 391910400, while the sum is 69.

The spelling of 64195652673618 in words is "sixty-four trillion, one hundred ninety-five billion, six hundred fifty-two million, six hundred seventy-three thousand, six hundred eighteen".