64543434546 has 32 divisors (see below), whose sum is σ = 133552641600. Its totient is φ = 20770344000.

The previous prime is 64543434499. The next prime is 64543434547.

64543434546 is nontrivially palindromic in base 10.

64543434546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64543434546² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64543434495 and 64543434504.

It is not an unprimeable number, because it can be changed into a prime (64543434547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2466660 + ... + 2492688.

It is an arithmetic number, because the mean of its divisors is an integer number (4173520050).

Almost surely, 2^64543434546 is an apocalyptic number.

64543434546 is an abundant number, since it is smaller than the sum of its proper divisors (69009207054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64543434546 is a wasteful number, since it uses less digits than its factorization.

64543434546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40314.

The product of its digits is 8294400, while the sum is 48.

The spelling of 64543434546 in words is "sixty-four billion, five hundred forty-three million, four hundred thirty-four thousand, five hundred forty-six".