65501065512120 has 64 divisors (see below), whose sum is σ = 224575081758720. Its totient is φ = 14971672116864.

The previous prime is 65501065512023. The next prime is 65501065512149. The reversal of 65501065512120 is 2121556010556.

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, 38988728632 + ... + 38988730311.

It is an arithmetic number, because the mean of its divisors is an integer number (3508985652480).

Almost surely, 2^{65501065512120} is an apocalyptic number.

65501065512120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65501065512120 is an abundant number, since it is smaller than the sum of its proper divisors (159074016246600).

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

65501065512120 is a wasteful number, since it uses less digits than its factorization.

65501065512120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77977458964 (or 77977458960 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 65501065512120 in words is "sixty-five trillion, five hundred one billion, sixty-five million, five hundred twelve thousand, one hundred twenty".