38438665339646 has 32 divisors (see below), whose sum is σ = 67738776432768. Its totient is φ = 16127942559840.

The previous prime is 38438665339619. The next prime is 38438665339649. The reversal of 38438665339646 is 64693356683483.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38438665339649) 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, 28841525 + ... + 30144831.

It is an arithmetic number, because the mean of its divisors is an integer number (2116836763524).

Almost surely, 2^{38438665339646} is an apocalyptic number.

38438665339646 is a deficient number, since it is larger than the sum of its proper divisors (29300111093122).

38438665339646 is a wasteful number, since it uses less digits than its factorization.

38438665339646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406456.

The product of its digits is 4837294080, while the sum is 74.

The spelling of 38438665339646 in words is "thirty-eight trillion, four hundred thirty-eight billion, six hundred sixty-five million, three hundred thirty-nine thousand, six hundred forty-six".