82921428329 has 2 divisors, whose sum is σ = 82921428330. Its totient is φ = 82921428328.

The previous prime is 82921428269. The next prime is 82921428389. The reversal of 82921428329 is 92382412928.

It is a balanced prime because it is at equal distance from previous prime (82921428269) and next prime (82921428389).

It can be written as a sum of positive squares in only one way, i.e., 74794045225 + 8127383104 = 273485^2 + 90152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82921428329 is a prime.

It is a super-2 number, since 2×82921428329² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82921428389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41460714164 + 41460714165.

It is an arithmetic number, because the mean of its divisors is an integer number (41460714165).

Almost surely, 2^82921428329 is an apocalyptic number.

It is an amenable number.

82921428329 is a deficient number, since it is larger than the sum of its proper divisors (1).

82921428329 is an equidigital number, since it uses as much as digits as its factorization.

82921428329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The spelling of 82921428329 in words is "eighty-two billion, nine hundred twenty-one million, four hundred twenty-eight thousand, three hundred twenty-nine".