64647404035222 has 16 divisors (see below), whose sum is σ = 97168439767392. Its totient is φ = 32257930129920.

The previous prime is 64647404035141. The next prime is 64647404035223. The reversal of 64647404035222 is 22253040474646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64647404035223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20152822 + ... + 23139382.

It is an arithmetic number, because the mean of its divisors is an integer number (6073027485462).

Almost surely, 2^{64647404035222} is an apocalyptic number.

64647404035222 is a deficient number, since it is larger than the sum of its proper divisors (32521035732170).

64647404035222 is a wasteful number, since it uses less digits than its factorization.

64647404035222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008583.

The product of its (nonzero) digits is 7741440, while the sum is 49.

The spelling of 64647404035222 in words is "sixty-four trillion, six hundred forty-seven billion, four hundred four million, thirty-five thousand, two hundred twenty-two".