138681650017 has 8 divisors (see below), whose sum is σ = 138834017280. Its totient is φ = 138529340400.

The previous prime is 138681649979. The next prime is 138681650039. The reversal of 138681650017 is 710056186831.

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 138681650017 - 2⁷ = 138681649889 is a prime.

It is a super-2 number, since 2×138681650017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138681650087) 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, 6219234 + ... + 6241492.

It is an arithmetic number, because the mean of its divisors is an integer number (17354252160).

Almost surely, 2^138681650017 is an apocalyptic number.

It is an amenable number.

138681650017 is a deficient number, since it is larger than the sum of its proper divisors (152367263).

138681650017 is a wasteful number, since it uses less digits than its factorization.

138681650017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28823.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 138681650017 in words is "one hundred thirty-eight billion, six hundred eighty-one million, six hundred fifty thousand, seventeen".