64400220262604 has 12 divisors (see below), whose sum is σ = 116335881764928. Its totient is φ = 31161396901200.

The previous prime is 64400220262531. The next prime is 64400220262607. The reversal of 64400220262604 is 40626202200446.

It is not an unprimeable number, because it can be changed into a prime (64400220262607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259678307387 + ... + 259678307634.

It is an arithmetic number, because the mean of its divisors is an integer number (9694656813744).

Almost surely, 2^{64400220262604} is an apocalyptic number.

It is an amenable number.

64400220262604 is a deficient number, since it is larger than the sum of its proper divisors (51935661502324).

64400220262604 is a wasteful number, since it uses less digits than its factorization.

64400220262604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519356615056 (or 519356615054 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 64400220262604 in words is "sixty-four trillion, four hundred billion, two hundred twenty million, two hundred sixty-two thousand, six hundred four".