64465939682 has 16 divisors (see below), whose sum is σ = 97096560192. Its totient is φ = 32100648240.

The previous prime is 64465939669. The next prime is 64465939693. The reversal of 64465939682 is 28693956446.

It is a happy number.

It is a super-2 number, since 2×64465939682² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513203 + ... + 626345.

It is an arithmetic number, because the mean of its divisors is an integer number (6068535012).

Almost surely, 2^64465939682 is an apocalyptic number.

64465939682 is a deficient number, since it is larger than the sum of its proper divisors (32630620510).

64465939682 is a wasteful number, since it uses less digits than its factorization.

64465939682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114313.

The product of its digits is 67184640, while the sum is 62.

The spelling of 64465939682 in words is "sixty-four billion, four hundred sixty-five million, nine hundred thirty-nine thousand, six hundred eighty-two".