38778581328 has 40 divisors (see below), whose sum is σ = 101820271776. Its totient is φ = 12714288000.

The previous prime is 38778581327. The next prime is 38778581329. The reversal of 38778581328 is 82318587783.

It is an interprime number because it is at equal distance from previous prime (38778581327) and next prime (38778581329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38778581327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6619098 + ... + 6624953.

Almost surely, 2^38778581328 is an apocalyptic number.

It is an amenable number.

38778581328 is an abundant number, since it is smaller than the sum of its proper divisors (63041690448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38778581328 is a wasteful number, since it uses less digits than its factorization.

38778581328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244123 (or 13244117 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 60.

The spelling of 38778581328 in words is "thirty-eight billion, seven hundred seventy-eight million, five hundred eighty-one thousand, three hundred twenty-eight".