64565250610040 has 16 divisors (see below), whose sum is σ = 145271813872680. Its totient is φ = 25826100244000.

The previous prime is 64565250609983. The next prime is 64565250610043. The reversal of 64565250610040 is 4001605256546.

It is a junction number, because it is equal to n+sod(n) for n = 64565250609973 and 64565250610000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64565250610043) 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, 807065632586 + ... + 807065632665.

Almost surely, 2^{64565250610040} is an apocalyptic number.

It is an amenable number.

64565250610040 is an abundant number, since it is smaller than the sum of its proper divisors (80706563262640).

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

64565250610040 is a wasteful number, since it uses less digits than its factorization.

64565250610040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614131265262 (or 1614131265258 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 64565250610040 its reverse (4001605256546), we get a palindrome (68566855866586).

The spelling of 64565250610040 in words is "sixty-four trillion, five hundred sixty-five billion, two hundred fifty million, six hundred ten thousand, forty".