4020323732857 has 2 divisors, whose sum is σ = 4020323732858. Its totient is φ = 4020323732856.

The previous prime is 4020323732849. The next prime is 4020323732891. The reversal of 4020323732857 is 7582373230204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3992879171961 + 27444560896 = 1998219^2 + 165664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020323732857 - 2³ = 4020323732849 is a prime.

It is a super-3 number, since 3×4020323732857³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4020323732057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010161866428 + 2010161866429.

It is an arithmetic number, because the mean of its divisors is an integer number (2010161866429).

Almost surely, 2^{4020323732857} is an apocalyptic number.

It is an amenable number.

4020323732857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020323732857 is an equidigital number, since it uses as much as digits as its factorization.

4020323732857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 4020323732857 in words is "four trillion, twenty billion, three hundred twenty-three million, seven hundred thirty-two thousand, eight hundred fifty-seven".