38381373778 has 16 divisors (see below), whose sum is σ = 64142181504. Its totient is φ = 17074885360.

The previous prime is 38381373769. The next prime is 38381373847. The reversal of 38381373778 is 87737318383.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18558625 + ... + 18560692.

It is an arithmetic number, because the mean of its divisors is an integer number (4008886344).

Almost surely, 2^38381373778 is an apocalyptic number.

38381373778 is a deficient number, since it is larger than the sum of its proper divisors (25760807726).

38381373778 is a wasteful number, since it uses less digits than its factorization.

38381373778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37119377.

The product of its digits is 14224896, while the sum is 58.

The spelling of 38381373778 in words is "thirty-eight billion, three hundred eighty-one million, three hundred seventy-three thousand, seven hundred seventy-eight".