65010661056500 has 48 divisors (see below), whose sum is σ = 141984089607360. Its totient is φ = 26004116829600.

The previous prime is 65010661056499. The next prime is 65010661056541. The reversal of 65010661056500 is 565016601056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145129871 + ... + 145577129.

It is an arithmetic number, because the mean of its divisors is an integer number (2958001866820).

Almost surely, 2^{65010661056500} is an apocalyptic number.

It is an amenable number.

65010661056500 is an abundant number, since it is smaller than the sum of its proper divisors (76973428550860).

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

65010661056500 is a wasteful number, since it uses less digits than its factorization.

65010661056500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737985 (or 737973 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

Adding to 65010661056500 its reverse (565016601056), we get a palindrome (65575677657556).

The spelling of 65010661056500 in words is "sixty-five trillion, ten billion, six hundred sixty-one million, fifty-six thousand, five hundred".