64662407644652 has 24 divisors (see below), whose sum is σ = 116289543147792. Its totient is φ = 31441862649600.

The previous prime is 64662407644633. The next prime is 64662407644669. The reversal of 64662407644652 is 25644670426646.

It is a happy number.

It is a super-2 number, since 2×64662407644652² (a number of 28 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, 629793674 + ... + 629896337.

It is an arithmetic number, because the mean of its divisors is an integer number (4845397631158).

Almost surely, 2^{64662407644652} is an apocalyptic number.

It is an amenable number.

64662407644652 is a deficient number, since it is larger than the sum of its proper divisors (51627135503140).

64662407644652 is a wasteful number, since it uses less digits than its factorization.

64662407644652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259690369 (or 1259690367 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 62.

The spelling of 64662407644652 in words is "sixty-four trillion, six hundred sixty-two billion, four hundred seven million, six hundred forty-four thousand, six hundred fifty-two".