38111666503681 has 8 divisors (see below), whose sum is σ = 39259715774400. Its totient is φ = 36975514116912.

The previous prime is 38111666503679. The next prime is 38111666503697. The reversal of 38111666503681 is 18630566611183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38111666503681 - 2¹ = 38111666503679 is a prime.

It is a super-2 number, since 2×38111666503681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38111666503661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2974214485 + ... + 2974227298.

It is an arithmetic number, because the mean of its divisors is an integer number (4907464471800).

Almost surely, 2^{38111666503681} is an apocalyptic number.

It is an amenable number.

38111666503681 is a deficient number, since it is larger than the sum of its proper divisors (1148049270719).

38111666503681 is a wasteful number, since it uses less digits than its factorization.

38111666503681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948441975.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 38111666503681 in words is "thirty-eight trillion, one hundred eleven billion, six hundred sixty-six million, five hundred three thousand, six hundred eighty-one".