64744444746 has 64 divisors (see below), whose sum is σ = 149789616000. Its totient is φ = 20710505088.

The previous prime is 64744444729. The next prime is 64744444753.

64744444746 is a `hidden beast` number, since 64 + 74 + 4 + 44 + 474 + 6 = 666.

64744444746 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 64744444692 and 64744444701.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 76096 + ... + 367803.

It is an arithmetic number, because the mean of its divisors is an integer number (2340462750).

Almost surely, 2^64744444746 is an apocalyptic number.

64744444746 is an abundant number, since it is smaller than the sum of its proper divisors (85045171254).

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

64744444746 is a wasteful number, since it uses less digits than its factorization.

64744444746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444020 (or 444014 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 54.

The spelling of 64744444746 in words is "sixty-four billion, seven hundred forty-four million, four hundred forty-four thousand, seven hundred forty-six".