38781568381137 has 16 divisors (see below), whose sum is σ = 51745635775680. Its totient is φ = 25835942264832.

The previous prime is 38781568381097. The next prime is 38781568381181. The reversal of 38781568381137 is 73118386518783.

It is not a de Polignac number, because 38781568381137 - 2¹⁶ = 38781568315601 is a prime.

It is a super-2 number, since 2×38781568381137² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38781568381537) 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, 68798289 + ... + 69359697.

It is an arithmetic number, because the mean of its divisors is an integer number (3234102235980).

Almost surely, 2^{38781568381137} is an apocalyptic number.

It is an amenable number.

38781568381137 is a deficient number, since it is larger than the sum of its proper divisors (12964067394543).

38781568381137 is a wasteful number, since it uses less digits than its factorization.

38781568381137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577792.

The product of its digits is 162570240, while the sum is 69.

The spelling of 38781568381137 in words is "thirty-eight trillion, seven hundred eighty-one billion, five hundred sixty-eight million, three hundred eighty-one thousand, one hundred thirty-seven".