64243513311 has 32 divisors (see below), whose sum is σ = 86944032000. Its totient is φ = 42191912448.

The previous prime is 64243513309. The next prime is 64243513363. The reversal of 64243513311 is 11331534246.

It is not a de Polignac number, because 64243513311 - 2¹ = 64243513309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64243515311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63669975 + ... + 63670983.

It is an arithmetic number, because the mean of its divisors is an integer number (2717001000).

Almost surely, 2^64243513311 is an apocalyptic number.

64243513311 is a deficient number, since it is larger than the sum of its proper divisors (22700518689).

64243513311 is a wasteful number, since it uses less digits than its factorization.

64243513311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its digits is 25920, while the sum is 33.

The spelling of 64243513311 in words is "sixty-four billion, two hundred forty-three million, five hundred thirteen thousand, three hundred eleven".