38678630657447 has 6 divisors (see below), whose sum is σ = 42514527912864. Its totient is φ = 35162391506660.

The previous prime is 38678630657383. The next prime is 38678630657467. The reversal of 38678630657447 is 74475603687683.

It is not a de Polignac number, because 38678630657447 - 2⁶ = 38678630657383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678630657467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159829052183 + ... + 159829052424.

It is an arithmetic number, because the mean of its divisors is an integer number (7085754652144).

Almost surely, 2^{38678630657447} is an apocalyptic number.

38678630657447 is a deficient number, since it is larger than the sum of its proper divisors (3835897255417).

38678630657447 is a wasteful number, since it uses less digits than its factorization.

38678630657447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319658104629 (or 319658104618 counting only the distinct ones).

The product of its (nonzero) digits is 3413975040, while the sum is 74.

The spelling of 38678630657447 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred thirty million, six hundred fifty-seven thousand, four hundred forty-seven".