64544044044546 has 64 divisors (see below), whose sum is σ = 156471961334400. Its totient is φ = 19558607284800.

The previous prime is 64544044044457. The next prime is 64544044044569.

64544044044546 is a `hidden beast` number, since 6 + 4 + 54 + 4 + 0 + 4 + 4 + 0 + 44 + 546 = 666.

64544044044546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64544044044546² (a number of 28 digits) contains 22 as substring.

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 = 64544044044492 and 64544044044501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66414460 + ... + 67379288.

It is an arithmetic number, because the mean of its divisors is an integer number (2444874395850).

Almost surely, 2^{64544044044546} is an apocalyptic number.

64544044044546 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64544044044546 is an abundant number, since it is smaller than the sum of its proper divisors (91927917289854).

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

64544044044546 is a wasteful number, since it uses less digits than its factorization.

64544044044546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077472 (or 1077466 counting only the distinct ones).

The product of its (nonzero) digits is 58982400, while the sum is 54.

The spelling of 64544044044546 in words is "sixty-four trillion, five hundred forty-four billion, forty-four million, forty-four thousand, five hundred forty-six".