64843077189 has 32 divisors (see below), whose sum is σ = 95427072000. Its totient is φ = 38836856960.

The previous prime is 64843077161. The next prime is 64843077209. The reversal of 64843077189 is 98177034846.

It is not a de Polignac number, because 64843077189 - 2¹⁷ = 64842946117 is a prime.

It is a super-2 number, since 2×64843077189² (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 (64843077109) 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 31 ways as a sum of consecutive naturals, for example, 7041262 + ... + 7050464.

It is an arithmetic number, because the mean of its divisors is an integer number (2982096000).

Almost surely, 2^64843077189 is an apocalyptic number.

It is an amenable number.

64843077189 is a deficient number, since it is larger than the sum of its proper divisors (30583994811).

64843077189 is a wasteful number, since it uses less digits than its factorization.

64843077189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 64843077189 in words is "sixty-four billion, eight hundred forty-three million, seventy-seven thousand, one hundred eighty-nine".