82228212878512 has 40 divisors (see below), whose sum is σ = 168737671638000. Its totient is φ = 38684409772032.

The previous prime is 82228212878509. The next prime is 82228212878531. The reversal of 82228212878512 is 21587821282228.

It is a happy number.

It is a super-2 number, since 2×82228212878512² (a number of 29 digits) contains 22 as substring.

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, 42887562 + ... + 44763817.

It is an arithmetic number, because the mean of its divisors is an integer number (4218441790950).

Almost surely, 2^{82228212878512} is an apocalyptic number.

It is an amenable number.

82228212878512 is an abundant number, since it is smaller than the sum of its proper divisors (86509458759488).

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

82228212878512 is a wasteful number, since it uses less digits than its factorization.

82228212878512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87654853 (or 87654847 counting only the distinct ones).

The product of its digits is 9175040, while the sum is 58.

The spelling of 82228212878512 in words is "eighty-two trillion, two hundred twenty-eight billion, two hundred twelve million, eight hundred seventy-eight thousand, five hundred twelve".