64538683546 has 8 divisors (see below), whose sum is σ = 96883838100. Its totient is φ = 32244070848.

The previous prime is 64538683459. The next prime is 64538683577.

64538683546 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 64498221225 + 40462321 = 253965^2 + 6361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64538683546² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12632271 + ... + 12637378.

Almost surely, 2^64538683546 is an apocalyptic number.

64538683546 is a deficient number, since it is larger than the sum of its proper divisors (32345154554).

64538683546 is a wasteful number, since it uses less digits than its factorization.

64538683546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25270928.

The product of its digits is 49766400, while the sum is 58.

The spelling of 64538683546 in words is "sixty-four billion, five hundred thirty-eight million, six hundred eighty-three thousand, five hundred forty-six".