64877745811 has 16 divisors (see below), whose sum is σ = 68360371200. Its totient is φ = 61450774528.

The previous prime is 64877745809. The next prime is 64877745817. The reversal of 64877745811 is 11854777846.

It is not a de Polignac number, because 64877745811 - 2¹ = 64877745809 is a prime.

It is a super-3 number, since 3×64877745811³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64877745817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8188710 + ... + 8196628.

It is an arithmetic number, because the mean of its divisors is an integer number (4272523200).

Almost surely, 2^64877745811 is an apocalyptic number.

64877745811 is a deficient number, since it is larger than the sum of its proper divisors (3482625389).

64877745811 is a wasteful number, since it uses less digits than its factorization.

64877745811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378.

The product of its digits is 10536960, while the sum is 58.

The spelling of 64877745811 in words is "sixty-four billion, eight hundred seventy-seven million, seven hundred forty-five thousand, eight hundred eleven".