64004035520 has 56 divisors (see below), whose sum is σ = 152517799104. Its totient is φ = 25583440896.

The previous prime is 64004035507. The next prime is 64004035541. The reversal of 64004035520 is 2553040046.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 385082 + ... + 525638.

Almost surely, 2^64004035520 is an apocalyptic number.

It is an amenable number.

64004035520 is an abundant number, since it is smaller than the sum of its proper divisors (88513763584).

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

64004035520 is a wasteful number, since it uses less digits than its factorization.

64004035520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141997 (or 141987 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 64004035520 its reverse (2553040046), we get a palindrome (66557075566).

The spelling of 64004035520 in words is "sixty-four billion, four million, thirty-five thousand, five hundred twenty".