38720774851009 has 2 divisors, whose sum is σ = 38720774851010. Its totient is φ = 38720774851008.

The previous prime is 38720774850971. The next prime is 38720774851037. The reversal of 38720774851009 is 90015847702783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28808478226609 + 9912296624400 = 5367353^2 + 3148380^2 .

It is a cyclic number.

It is not a de Polignac number, because 38720774851009 - 2¹⁵ = 38720774818241 is a prime.

It is a super-2 number, since 2×38720774851009² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38720774851309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19360387425504 + 19360387425505.

It is an arithmetic number, because the mean of its divisors is an integer number (19360387425505).

Almost surely, 2^{38720774851009} is an apocalyptic number.

It is an amenable number.

38720774851009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38720774851009 is an equidigital number, since it uses as much as digits as its factorization.

38720774851009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 38720774851009 in words is "thirty-eight trillion, seven hundred twenty billion, seven hundred seventy-four million, eight hundred fifty-one thousand, nine".