82771488245420 has 96 divisors (see below), whose sum is σ = 208633825310400. Its totient is φ = 27250132230144.

The previous prime is 82771488245371. The next prime is 82771488245441. The reversal of 82771488245420 is 2454288417728.

It is a happy number.

It is a super-2 number, since 2×82771488245420² (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 31 ways as a sum of consecutive naturals, for example, 492720785 + ... + 492888744.

It is an arithmetic number, because the mean of its divisors is an integer number (2173269013650).

Almost surely, 2^{82771488245420} is an apocalyptic number.

It is an amenable number.

82771488245420 is an abundant number, since it is smaller than the sum of its proper divisors (125862337064980).

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

82771488245420 is a wasteful number, since it uses less digits than its factorization.

82771488245420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985609587 (or 985609585 counting only the distinct ones).

The product of its (nonzero) digits is 64225280, while the sum is 62.

The spelling of 82771488245420 in words is "eighty-two trillion, seven hundred seventy-one billion, four hundred eighty-eight million, two hundred forty-five thousand, four hundred twenty".