65452220520 has 64 divisors (see below), whose sum is σ = 198380992320. Its totient is φ = 17273985024.

The previous prime is 65452220513. The next prime is 65452220527. The reversal of 65452220520 is 2502225456.

It is an interprime number because it is at equal distance from previous prime (65452220513) and next prime (65452220527).

It is not an unprimeable number, because it can be changed into a prime (65452220527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2799882 + ... + 2823161.

It is an arithmetic number, because the mean of its divisors is an integer number (3099703005).

Almost surely, 2^65452220520 is an apocalyptic number.

65452220520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65452220520 is an abundant number, since it is smaller than the sum of its proper divisors (132928771800).

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

65452220520 is a wasteful number, since it uses less digits than its factorization.

65452220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623154 (or 5623150 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 65452220520 its reverse (2502225456), we get a palindrome (67954445976).

The spelling of 65452220520 in words is "sixty-five billion, four hundred fifty-two million, two hundred twenty thousand, five hundred twenty".