138650605331 has 8 divisors (see below), whose sum is σ = 158460651360. Its totient is φ = 118841263488.

The previous prime is 138650605319. The next prime is 138650605351. The reversal of 138650605331 is 133506056831.

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 138650605331 - 2⁶ = 138650605267 is a prime.

It is a super-2 number, since 2×138650605331² (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 (138650605351) 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, 351125 + ... + 632921.

It is an arithmetic number, because the mean of its divisors is an integer number (19807581420).

Almost surely, 2^138650605331 is an apocalyptic number.

138650605331 is a deficient number, since it is larger than the sum of its proper divisors (19810046029).

138650605331 is an equidigital number, since it uses as much as digits as its factorization.

138650605331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352093.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 138650605331 in words is "one hundred thirty-eight billion, six hundred fifty million, six hundred five thousand, three hundred thirty-one".