82513303220 has 24 divisors (see below), whose sum is σ = 173460952224. Its totient is φ = 32970461216.

The previous prime is 82513303157. The next prime is 82513303253. The reversal of 82513303220 is 2230331528.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2159342 + ... + 2197221.

It is an arithmetic number, because the mean of its divisors is an integer number (7227539676).

Almost surely, 2^82513303220 is an apocalyptic number.

It is an amenable number.

82513303220 is an abundant number, since it is smaller than the sum of its proper divisors (90947649004).

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

82513303220 is a wasteful number, since it uses less digits than its factorization.

82513303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357519 (or 4357517 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 82513303220 its reverse (2230331528), we get a palindrome (84743634748).

The spelling of 82513303220 in words is "eighty-two billion, five hundred thirteen million, three hundred three thousand, two hundred twenty".