32570616821 has 2 divisors, whose sum is σ = 32570616822. Its totient is φ = 32570616820.

The previous prime is 32570616773. The next prime is 32570616823. The reversal of 32570616821 is 12861607523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31253289796 + 1317327025 = 176786^2 + 36295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32570616821 is a prime.

Together with 32570616823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32570616823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16285308410 + 16285308411.

It is an arithmetic number, because the mean of its divisors is an integer number (16285308411).

Almost surely, 2^32570616821 is an apocalyptic number.

It is an amenable number.

32570616821 is a deficient number, since it is larger than the sum of its proper divisors (1).

32570616821 is an equidigital number, since it uses as much as digits as its factorization.

32570616821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 32570616821 in words is "thirty-two billion, five hundred seventy million, six hundred sixteen thousand, eight hundred twenty-one".