65220120552020 has 48 divisors (see below), whose sum is σ = 156545663154048. Its totient is φ = 22358702213760.

The previous prime is 65220120552007. The next prime is 65220120552127. The reversal of 65220120552020 is 2025502102256.

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, 24587867 + ... + 27110946.

It is an arithmetic number, because the mean of its divisors is an integer number (3261367982376).

Almost surely, 2^{65220120552020} is an apocalyptic number.

It is an amenable number.

65220120552020 is an abundant number, since it is smaller than the sum of its proper divisors (91325542602028).

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

65220120552020 is a wasteful number, since it uses less digits than its factorization.

65220120552020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51707840 (or 51707838 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 65220120552020 its reverse (2025502102256), we get a palindrome (67245622654276).

The spelling of 65220120552020 in words is "sixty-five trillion, two hundred twenty billion, one hundred twenty million, five hundred fifty-two thousand, twenty".