64642462006642 has 8 divisors (see below), whose sum is σ = 104422438626156. Its totient is φ = 29834982464592.

The previous prime is 64642462006627. The next prime is 64642462006651. The reversal of 64642462006642 is 24660026424646.

It can be written as a sum of positive squares in 2 ways, for example, as 54446261470441 + 10196200536201 = 7378771^2 + 3193149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64642462006642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243124269333 + ... + 1243124269384.

Almost surely, 2^{64642462006642} is an apocalyptic number.

64642462006642 is a deficient number, since it is larger than the sum of its proper divisors (39779976619514).

64642462006642 is a wasteful number, since it uses less digits than its factorization.

64642462006642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486248538732.

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 64642462006642 in words is "sixty-four trillion, six hundred forty-two billion, four hundred sixty-two million, six thousand, six hundred forty-two".