64775657746 has 16 divisors (see below), whose sum is σ = 98352251928. Its totient is φ = 31993056000.

The previous prime is 64775657711. The next prime is 64775657773.

It is a happy number.

64775657746 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 43228647225 + 21547010521 = 207915^2 + 146789^2 .

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 7 ways as a sum of consecutive naturals, for example, 282825 + ... + 457756.

Almost surely, 2^64775657746 is an apocalyptic number.

64775657746 is a deficient number, since it is larger than the sum of its proper divisors (33576594182).

64775657746 is a wasteful number, since it uses less digits than its factorization.

64775657746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741117.

The product of its digits is 207446400, while the sum is 64.

The spelling of 64775657746 in words is "sixty-four billion, seven hundred seventy-five million, six hundred fifty-seven thousand, seven hundred forty-six".