64622240444 has 24 divisors (see below), whose sum is σ = 118062403200. Its totient is φ = 30891472304.

The previous prime is 64622240429. The next prime is 64622240497. The reversal of 64622240444 is 44404222646.

64622240444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64622240398 and 64622240407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25787 + ... + 360429.

It is an arithmetic number, because the mean of its divisors is an integer number (4919266800).

Almost surely, 2^64622240444 is an apocalyptic number.

It is an amenable number.

64622240444 is a deficient number, since it is larger than the sum of its proper divisors (53440162756).

64622240444 is a wasteful number, since it uses less digits than its factorization.

64622240444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336769 (or 336767 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

The spelling of 64622240444 in words is "sixty-four billion, six hundred twenty-two million, two hundred forty thousand, four hundred forty-four".