64044355311 has 6 divisors (see below), whose sum is σ = 92508513240. Its totient is φ = 42696236868.

The previous prime is 64044355303. The next prime is 64044355381. The reversal of 64044355311 is 11355344046.

64044355311 is a `hidden beast` number, since 64 + 0 + 4 + 43 + 553 + 1 + 1 = 666.

It is not a de Polignac number, because 64044355311 - 2³ = 64044355303 is a prime.

It is a super-2 number, since 2×64044355311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64044355381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3558019731 + ... + 3558019748.

It is an arithmetic number, because the mean of its divisors is an integer number (15418085540).

Almost surely, 2^64044355311 is an apocalyptic number.

64044355311 is a deficient number, since it is larger than the sum of its proper divisors (28464157929).

64044355311 is a wasteful number, since it uses less digits than its factorization.

64044355311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116039485 (or 7116039482 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 64044355311 its reverse (11355344046), we get a palindrome (75399699357).

The spelling of 64044355311 in words is "sixty-four billion, forty-four million, three hundred fifty-five thousand, three hundred eleven".