64163835543 has 4 divisors (see below), whose sum is σ = 85551780728. Its totient is φ = 42775890360.

The previous prime is 64163835473. The next prime is 64163835551. The reversal of 64163835543 is 34553836146.

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

It is not a de Polignac number, because 64163835543 - 2¹⁶ = 64163770007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64163835492 and 64163835501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64163835143) 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, 10693972588 + ... + 10693972593.

It is an arithmetic number, because the mean of its divisors is an integer number (21387945182).

Almost surely, 2^64163835543 is an apocalyptic number.

64163835543 is a deficient number, since it is larger than the sum of its proper divisors (21387945185).

64163835543 is a wasteful number, since it uses less digits than its factorization.

64163835543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21387945184.

The product of its digits is 3110400, while the sum is 48.

The spelling of 64163835543 in words is "sixty-four billion, one hundred sixty-three million, eight hundred thirty-five thousand, five hundred forty-three".