39991078201 has 2 divisors, whose sum is σ = 39991078202. Its totient is φ = 39991078200.

The previous prime is 39991078163. The next prime is 39991078219. The reversal of 39991078201 is 10287019993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39537345600 + 453732601 = 198840^2 + 21301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39991078201 is a prime.

It is not a weakly prime, because it can be changed into another prime (39991078241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19995539100 + 19995539101.

It is an arithmetic number, because the mean of its divisors is an integer number (19995539101).

Almost surely, 2^39991078201 is an apocalyptic number.

It is an amenable number.

39991078201 is a deficient number, since it is larger than the sum of its proper divisors (1).

39991078201 is an equidigital number, since it uses as much as digits as its factorization.

39991078201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The spelling of 39991078201 in words is "thirty-nine billion, nine hundred ninety-one million, seventy-eight thousand, two hundred one".