64043064105121 has 4 divisors (see below), whose sum is σ = 64043080857792. Its totient is φ = 64043047352452.

The previous prime is 64043064105073. The next prime is 64043064105169. The reversal of 64043064105121 is 12150146034046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (64043064105073) and next prime (64043064105169).

It is a cyclic number.

It is not a de Polignac number, because 64043064105121 - 2²⁹ = 64042527234209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64043064103121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477396 + ... + 11327578.

It is an arithmetic number, because the mean of its divisors is an integer number (16010770214448).

Almost surely, 2^{64043064105121} is an apocalyptic number.

It is an amenable number.

64043064105121 is a deficient number, since it is larger than the sum of its proper divisors (16752671).

64043064105121 is a wasteful number, since it uses less digits than its factorization.

64043064105121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16752670.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 64043064105121 in words is "sixty-four trillion, forty-three billion, sixty-four million, one hundred five thousand, one hundred twenty-one".