39432834016021 has 2 divisors, whose sum is σ = 39432834016022. Its totient is φ = 39432834016020.

The previous prime is 39432834016013. The next prime is 39432834016049. The reversal of 39432834016021 is 12061043823493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31241280572100 + 8191553443921 = 5589390^2 + 2862089^2 .

It is a cyclic number.

It is not a de Polignac number, because 39432834016021 - 2³ = 39432834016013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39432834016001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19716417008010 + 19716417008011.

It is an arithmetic number, because the mean of its divisors is an integer number (19716417008011).

Almost surely, 2^{39432834016021} is an apocalyptic number.

It is an amenable number.

39432834016021 is a deficient number, since it is larger than the sum of its proper divisors (1).

39432834016021 is an equidigital number, since it uses as much as digits as its factorization.

39432834016021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 39432834016021 in words is "thirty-nine trillion, four hundred thirty-two billion, eight hundred thirty-four million, sixteen thousand, twenty-one".