38871065517439 has 2 divisors, whose sum is σ = 38871065517440. Its totient is φ = 38871065517438.

The previous prime is 38871065517409. The next prime is 38871065517451. The reversal of 38871065517439 is 93471556017883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38871065517439 - 2¹⁷ = 38871065386367 is a prime.

It is a super-2 number, since 2×38871065517439² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38871065517409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19435532758719 + 19435532758720.

It is an arithmetic number, because the mean of its divisors is an integer number (19435532758720).

Almost surely, 2^{38871065517439} is an apocalyptic number.

38871065517439 is a deficient number, since it is larger than the sum of its proper divisors (1).

38871065517439 is an equidigital number, since it uses as much as digits as its factorization.

38871065517439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 152409600, while the sum is 67.

The spelling of 38871065517439 in words is "thirty-eight trillion, eight hundred seventy-one billion, sixty-five million, five hundred seventeen thousand, four hundred thirty-nine".