82570971929 has 2 divisors, whose sum is σ = 82570971930. Its totient is φ = 82570971928.

The previous prime is 82570971919. The next prime is 82570971997. The reversal of 82570971929 is 92917907528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54866035225 + 27704936704 = 234235^2 + 166448^2 .

It is a cyclic number.

It is not a de Polignac number, because 82570971929 - 2²⁴ = 82554194713 is a prime.

It is not a weakly prime, because it can be changed into another prime (82570971919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41285485964 + 41285485965.

It is an arithmetic number, because the mean of its divisors is an integer number (41285485965).

Almost surely, 2^82570971929 is an apocalyptic number.

It is an amenable number.

82570971929 is a deficient number, since it is larger than the sum of its proper divisors (1).

82570971929 is an equidigital number, since it uses as much as digits as its factorization.

82570971929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 82570971929 in words is "eighty-two billion, five hundred seventy million, nine hundred seventy-one thousand, nine hundred twenty-nine".