38687259856009 has 2 divisors, whose sum is σ = 38687259856010. Its totient is φ = 38687259856008.

The previous prime is 38687259855989. The next prime is 38687259856039. The reversal of 38687259856009 is 90065895278683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26856906993225 + 11830352862784 = 5182365^2 + 3439528^2 .

It is a cyclic number.

It is not a de Polignac number, because 38687259856009 - 2¹⁷ = 38687259724937 is a prime.

It is a super-2 number, since 2×38687259856009² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38687259856039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19343629928004 + 19343629928005.

It is an arithmetic number, because the mean of its divisors is an integer number (19343629928005).

Almost surely, 2^{38687259856009} is an apocalyptic number.

It is an amenable number.

38687259856009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38687259856009 is an equidigital number, since it uses as much as digits as its factorization.

38687259856009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1567641600, while the sum is 76.

The spelling of 38687259856009 in words is "thirty-eight trillion, six hundred eighty-seven billion, two hundred fifty-nine million, eight hundred fifty-six thousand, nine".