38778819140 has 48 divisors (see below), whose sum is σ = 84276460800. Its totient is φ = 14970813312.

The previous prime is 38778819133. The next prime is 38778819143. The reversal of 38778819140 is 4191887783.

It is not an unprimeable number, because it can be changed into a prime (38778819143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1662881 + ... + 1686039.

It is an arithmetic number, because the mean of its divisors is an integer number (1755759600).

Almost surely, 2^38778819140 is an apocalyptic number.

It is an amenable number.

38778819140 is an abundant number, since it is smaller than the sum of its proper divisors (45497641660).

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

38778819140 is a wasteful number, since it uses less digits than its factorization.

38778819140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26084 (or 26082 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 38778819140 in words is "thirty-eight billion, seven hundred seventy-eight million, eight hundred nineteen thousand, one hundred forty".