64408348944 has 45 divisors (see below), whose sum is σ = 180262444453. Its totient is φ = 21468434496.

The previous prime is 64408348933. The next prime is 64408348973. The reversal of 64408348944 is 44984380446.

The square root of 64408348944 is 253788.

It is a perfect power (a square), and thus also a powerful number.

64408348944 is a `hidden beast` number, since 6 + 4 + 40 + 83 + 489 + 44 = 666.

64408348944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6462230544 + 57946118400 = 80388^2 + 240720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3034882 + ... + 3056030.

Almost surely, 2^64408348944 is an apocalyptic number.

64408348944 is the 253788-th square number.

It is an amenable number.

64408348944 is an abundant number, since it is smaller than the sum of its proper divisors (115854095509).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64408348944 is an frugal number, since it uses more digits than its factorization.

64408348944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42312 (or 21154 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 54.

The spelling of 64408348944 in words is "sixty-four billion, four hundred eight million, three hundred forty-eight thousand, nine hundred forty-four".