64445733343 has 16 divisors (see below), whose sum is σ = 67108279680. Its totient is φ = 61813751776.

The previous prime is 64445733301. The next prime is 64445733367. The reversal of 64445733343 is 34333754446.

It is a cyclic number.

It is not a de Polignac number, because 64445733343 - 2¹³ = 64445725151 is a prime.

It is a super-2 number, since 2×64445733343² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64445733293 and 64445733302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64445730343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063780 + ... + 3084742.

It is an arithmetic number, because the mean of its divisors is an integer number (4194267480).

Almost surely, 2^64445733343 is an apocalyptic number.

64445733343 is a deficient number, since it is larger than the sum of its proper divisors (2662546337).

64445733343 is a wasteful number, since it uses less digits than its factorization.

64445733343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21686.

The product of its digits is 4354560, while the sum is 46.

The spelling of 64445733343 in words is "sixty-four billion, four hundred forty-five million, seven hundred thirty-three thousand, three hundred forty-three".