38781568381138 has 32 divisors (see below), whose sum is σ = 66240270605952. Its totient is φ = 16856367369600.

The previous prime is 38781568381097. The next prime is 38781568381181. The reversal of 38781568381138 is 83118386518783.

It is a super-2 number, since 2×38781568381138² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10134403 + ... + 13426438.

It is an arithmetic number, because the mean of its divisors is an integer number (2070008456436).

Almost surely, 2^{38781568381138} is an apocalyptic number.

38781568381138 is a deficient number, since it is larger than the sum of its proper divisors (27458702224814).

38781568381138 is a wasteful number, since it uses less digits than its factorization.

38781568381138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23564130.

The product of its digits is 185794560, while the sum is 70.

The spelling of 38781568381138 in words is "thirty-eight trillion, seven hundred eighty-one billion, five hundred sixty-eight million, three hundred eighty-one thousand, one hundred thirty-eight".