38778331440787 has 12 divisors (see below), whose sum is σ = 42706137874320. Its totient is φ = 35140089810672.

The previous prime is 38778331440773. The next prime is 38778331440803. The reversal of 38778331440787 is 78704413387783.

It is not a de Polignac number, because 38778331440787 - 2¹¹ = 38778331438739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38778331447787) 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, 2335191712 + ... + 2335208317.

It is an arithmetic number, because the mean of its divisors is an integer number (3558844822860).

Almost surely, 2^{38778331440787} is an apocalyptic number.

38778331440787 is a deficient number, since it is larger than the sum of its proper divisors (3927806433533).

38778331440787 is a wasteful number, since it uses less digits than its factorization.

38778331440787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670400090 (or 4670400071 counting only the distinct ones).

The product of its (nonzero) digits is 531062784, while the sum is 70.

The spelling of 38778331440787 in words is "thirty-eight trillion, seven hundred seventy-eight billion, three hundred thirty-one million, four hundred forty thousand, seven hundred eighty-seven".