64644160606 has 32 divisors (see below), whose sum is σ = 99824739840. Its totient is φ = 31384431936.

The previous prime is 64644160591. The next prime is 64644160627. The reversal of 64644160606 is 60606144646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6802050 + ... + 6811546.

It is an arithmetic number, because the mean of its divisors is an integer number (3119523120).

Almost surely, 2^64644160606 is an apocalyptic number.

64644160606 is a deficient number, since it is larger than the sum of its proper divisors (35180579234).

64644160606 is a wasteful number, since it uses less digits than its factorization.

64644160606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10288.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 64644160606 in words is "sixty-four billion, six hundred forty-four million, one hundred sixty thousand, six hundred six".