38002640677649 has 2 divisors, whose sum is σ = 38002640677650. Its totient is φ = 38002640677648.

The previous prime is 38002640677637. The next prime is 38002640677711. The reversal of 38002640677649 is 94677604620083.

It is an a-pointer prime, because the next prime (38002640677711) can be obtained adding 38002640677649 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22901201670400 + 15101439007249 = 4785520^2 + 3886057^2 .

It is a cyclic number.

It is not a de Polignac number, because 38002640677649 - 2¹² = 38002640673553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38002640677591 and 38002640677600.

It is not a weakly prime, because it can be changed into another prime (38002640677619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19001320338824 + 19001320338825.

It is an arithmetic number, because the mean of its divisors is an integer number (19001320338825).

Almost surely, 2^{38002640677649} is an apocalyptic number.

It is an amenable number.

38002640677649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38002640677649 is an equidigital number, since it uses as much as digits as its factorization.

38002640677649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 38002640677649 in words is "thirty-eight trillion, two billion, six hundred forty million, six hundred seventy-seven thousand, six hundred forty-nine".