39503128997 has 2 divisors, whose sum is σ = 39503128998. Its totient is φ = 39503128996.

The previous prime is 39503128967. The next prime is 39503129053. The reversal of 39503128997 is 79982130593.

It is a happy number.

It is an a-pointer prime, because the next prime (39503129053) can be obtained adding 39503128997 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24107530756 + 15395598241 = 155266^2 + 124079^2 .

It is a cyclic number.

It is not a de Polignac number, because 39503128997 - 2⁶ = 39503128933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39503128967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19751564498 + 19751564499.

It is an arithmetic number, because the mean of its divisors is an integer number (19751564499).

Almost surely, 2^39503128997 is an apocalyptic number.

It is an amenable number.

39503128997 is a deficient number, since it is larger than the sum of its proper divisors (1).

39503128997 is an equidigital number, since it uses as much as digits as its factorization.

39503128997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 39503128997 in words is "thirty-nine billion, five hundred three million, one hundred twenty-eight thousand, nine hundred ninety-seven".