64143885459 has 4 divisors (see below), whose sum is σ = 85525180616. Its totient is φ = 42762590304.

The previous prime is 64143885419. The next prime is 64143885469. The reversal of 64143885459 is 95458834146.

64143885459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64143885459 - 2⁹ = 64143884947 is a prime.

It is a super-2 number, since 2×64143885459² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64143885399 and 64143885408.

It is not an unprimeable number, because it can be changed into a prime (64143885419) 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, 10690647574 + ... + 10690647579.

It is an arithmetic number, because the mean of its divisors is an integer number (21381295154).

Almost surely, 2^64143885459 is an apocalyptic number.

64143885459 is a deficient number, since it is larger than the sum of its proper divisors (21381295157).

64143885459 is a wasteful number, since it uses less digits than its factorization.

64143885459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21381295156.

The product of its digits is 16588800, while the sum is 57.

The spelling of 64143885459 in words is "sixty-four billion, one hundred forty-three million, eight hundred eighty-five thousand, four hundred fifty-nine".