39628378597 has 2 divisors, whose sum is σ = 39628378598. Its totient is φ = 39628378596.

The previous prime is 39628378591. The next prime is 39628378607. The reversal of 39628378597 is 79587382693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39217465156 + 410913441 = 198034^2 + 20271^2 .

It is a cyclic number.

It is not a de Polignac number, because 39628378597 - 2¹¹ = 39628376549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39628378591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19814189298 + 19814189299.

It is an arithmetic number, because the mean of its divisors is an integer number (19814189299).

Almost surely, 2^39628378597 is an apocalyptic number.

It is an amenable number.

39628378597 is a deficient number, since it is larger than the sum of its proper divisors (1).

39628378597 is an equidigital number, since it uses as much as digits as its factorization.

39628378597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 67.

The spelling of 39628378597 in words is "thirty-nine billion, six hundred twenty-eight million, three hundred seventy-eight thousand, five hundred ninety-seven".