82063311021 has 6 divisors (see below), whose sum is σ = 118535893710. Its totient is φ = 54708874008.

The previous prime is 82063310993. The next prime is 82063311049. The reversal of 82063311021 is 12011336028.

It is a happy number.

82063311021 is a `hidden beast` number, since 8 + 2 + 0 + 633 + 1 + 1 + 0 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (82063310993) and next prime (82063311049).

It can be written as a sum of positive squares in only one way, i.e., 66043346121 + 16019964900 = 256989^2 + 126570^2 .

It is not a de Polignac number, because 82063311021 - 2¹⁰ = 82063309997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82063311091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4559072826 + ... + 4559072843.

It is an arithmetic number, because the mean of its divisors is an integer number (19755982285).

Almost surely, 2^82063311021 is an apocalyptic number.

It is an amenable number.

82063311021 is a deficient number, since it is larger than the sum of its proper divisors (36472582689).

82063311021 is a wasteful number, since it uses less digits than its factorization.

82063311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118145675 (or 9118145672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 82063311021 its reverse (12011336028), we get a palindrome (94074647049).

The spelling of 82063311021 in words is "eighty-two billion, sixty-three million, three hundred eleven thousand, twenty-one".