82949363521 has 2 divisors, whose sum is σ = 82949363522. Its totient is φ = 82949363520.

The previous prime is 82949363509. The next prime is 82949363531. The reversal of 82949363521 is 12536394928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49775841025 + 33173522496 = 223105^2 + 182136^2 .

It is a cyclic number.

It is not a de Polignac number, because 82949363521 - 2⁹ = 82949363009 is a prime.

It is not a weakly prime, because it can be changed into another prime (82949363531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41474681760 + 41474681761.

It is an arithmetic number, because the mean of its divisors is an integer number (41474681761).

Almost surely, 2^82949363521 is an apocalyptic number.

It is an amenable number.

82949363521 is a deficient number, since it is larger than the sum of its proper divisors (1).

82949363521 is an equidigital number, since it uses as much as digits as its factorization.

82949363521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The spelling of 82949363521 in words is "eighty-two billion, nine hundred forty-nine million, three hundred sixty-three thousand, five hundred twenty-one".