38778468087447 has 12 divisors (see below), whose sum is σ = 61105464865224. Its totient is φ = 23502101871120.

The previous prime is 38778468087433. The next prime is 38778468087509. The reversal of 38778468087447 is 74478086487783.

38778468087447 is a `hidden beast` number, since 3 + 8 + 7 + 78 + 468 + 0 + 87 + 4 + 4 + 7 = 666.

It is not a de Polignac number, because 38778468087447 - 2⁷ = 38778468087319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38778468087347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195850848828 + ... + 195850849025.

It is an arithmetic number, because the mean of its divisors is an integer number (5092122072102).

Almost surely, 2^{38778468087447} is an apocalyptic number.

38778468087447 is a deficient number, since it is larger than the sum of its proper divisors (22326996777777).

38778468087447 is a wasteful number, since it uses less digits than its factorization.

38778468087447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391701697870 (or 391701697867 counting only the distinct ones).

The product of its (nonzero) digits is 11329339392, while the sum is 81.

The spelling of 38778468087447 in words is "thirty-eight trillion, seven hundred seventy-eight billion, four hundred sixty-eight million, eighty-seven thousand, four hundred forty-seven".