39603863320081 has 2 divisors, whose sum is σ = 39603863320082. Its totient is φ = 39603863320080.

The previous prime is 39603863320039. The next prime is 39603863320097. The reversal of 39603863320081 is 18002336830693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27769685393025 + 11834177927056 = 5269695^2 + 3440084^2 .

It is a cyclic number.

It is not a de Polignac number, because 39603863320081 - 2¹⁹ = 39603862795793 is a prime.

It is a super-2 number, since 2×39603863320081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39603863320381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19801931660040 + 19801931660041.

It is an arithmetic number, because the mean of its divisors is an integer number (19801931660041).

Almost surely, 2^{39603863320081} is an apocalyptic number.

It is an amenable number.

39603863320081 is a deficient number, since it is larger than the sum of its proper divisors (1).

39603863320081 is an equidigital number, since it uses as much as digits as its factorization.

39603863320081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 39603863320081 in words is "thirty-nine trillion, six hundred three billion, eight hundred sixty-three million, three hundred twenty thousand, eighty-one".