38778395553 has 12 divisors (see below), whose sum is σ = 58961303440. Its totient is φ = 24491618136.

The previous prime is 38778395533. The next prime is 38778395561. The reversal of 38778395553 is 35559387783.

It is a happy number.

38778395553 is a `hidden beast` number, since 3 + 8 + 7 + 78 + 3 + 9 + 5 + 553 = 666.

It is not a de Polignac number, because 38778395553 - 2⁸ = 38778395297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38778395503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113386951 + ... + 113387292.

Almost surely, 2^38778395553 is an apocalyptic number.

It is an amenable number.

38778395553 is a deficient number, since it is larger than the sum of its proper divisors (20182907887).

38778395553 is a wasteful number, since it uses less digits than its factorization.

38778395553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226774268 (or 226774265 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 63.

The spelling of 38778395553 in words is "thirty-eight billion, seven hundred seventy-eight million, three hundred ninety-five thousand, five hundred fifty-three".