38406552625487 has 2 divisors, whose sum is σ = 38406552625488. Its totient is φ = 38406552625486.

The previous prime is 38406552625481. The next prime is 38406552625517. The reversal of 38406552625487 is 78452625560483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38406552625487 - 2¹⁰ = 38406552624463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38406552625481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19203276312743 + 19203276312744.

It is an arithmetic number, because the mean of its divisors is an integer number (19203276312744).

Almost surely, 2^{38406552625487} is an apocalyptic number.

38406552625487 is a deficient number, since it is larger than the sum of its proper divisors (1).

38406552625487 is an equidigital number, since it uses as much as digits as its factorization.

38406552625487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072000, while the sum is 65.

The spelling of 38406552625487 in words is "thirty-eight trillion, four hundred six billion, five hundred fifty-two million, six hundred twenty-five thousand, four hundred eighty-seven".