65305202520 has 64 divisors (see below), whose sum is σ = 200471800320. Its totient is φ = 17009725824.

The previous prime is 65305202519. The next prime is 65305202531. The reversal of 65305202520 is 2520250356.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 6322864 + ... + 6333183.

It is an arithmetic number, because the mean of its divisors is an integer number (3132371880).

Almost surely, 2^65305202520 is an apocalyptic number.

65305202520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65305202520 is an abundant number, since it is smaller than the sum of its proper divisors (135166597800).

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

65305202520 is a wasteful number, since it uses less digits than its factorization.

65305202520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656104 (or 12656100 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 65305202520 its reverse (2520250356), we get a palindrome (67825452876).

The spelling of 65305202520 in words is "sixty-five billion, three hundred five million, two hundred two thousand, five hundred twenty".