82211152520 has 32 divisors (see below), whose sum is σ = 211400107200. Its totient is φ = 28186680768.

The previous prime is 82211152511. The next prime is 82211152523. The reversal of 82211152520 is 2525111228.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82211152523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146805350 + ... + 146805909.

It is an arithmetic number, because the mean of its divisors is an integer number (6606253350).

Almost surely, 2^82211152520 is an apocalyptic number.

It is an amenable number.

82211152520 is an abundant number, since it is smaller than the sum of its proper divisors (129188954680).

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

82211152520 is a wasteful number, since it uses less digits than its factorization.

82211152520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293611277 (or 293611273 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

Adding to 82211152520 its reverse (2525111228), we get a palindrome (84736263748).

The spelling of 82211152520 in words is "eighty-two billion, two hundred eleven million, one hundred fifty-two thousand, five hundred twenty".