82840472949973 has 2 divisors, whose sum is σ = 82840472949974. Its totient is φ = 82840472949972.

The previous prime is 82840472949917. The next prime is 82840472950009. The reversal of 82840472949973 is 37994927404828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59419538477649 + 23420934472324 = 7708407^2 + 4839518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82840472949973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82840472949973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82840472949473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41420236474986 + 41420236474987.

It is an arithmetic number, because the mean of its divisors is an integer number (41420236474987).

Almost surely, 2^{82840472949973} is an apocalyptic number.

It is an amenable number.

82840472949973 is a deficient number, since it is larger than the sum of its proper divisors (1).

82840472949973 is an equidigital number, since it uses as much as digits as its factorization.

82840472949973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1755758592, while the sum is 76.

The spelling of 82840472949973 in words is "eighty-two trillion, eight hundred forty billion, four hundred seventy-two million, nine hundred forty-nine thousand, nine hundred seventy-three".