64564364642 has 8 divisors (see below), whose sum is σ = 98907111936. Its totient is φ = 31595327332.

The previous prime is 64564364633. The next prime is 64564364663. The reversal of 64564364642 is 24646346546.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343427378 + ... + 343427565.

It is an arithmetic number, because the mean of its divisors is an integer number (12363388992).

Almost surely, 2^64564364642 is an apocalyptic number.

64564364642 is a deficient number, since it is larger than the sum of its proper divisors (34342747294).

64564364642 is a wasteful number, since it uses less digits than its factorization.

64564364642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686854992.

The product of its digits is 9953280, while the sum is 50.

The spelling of 64564364642 in words is "sixty-four billion, five hundred sixty-four million, three hundred sixty-four thousand, six hundred forty-two".