138229958099 has 4 divisors (see below), whose sum is σ = 138234848136. Its totient is φ = 138225068064.

The previous prime is 138229958047. The next prime is 138229958123. The reversal of 138229958099 is 990859922831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138229958099 - 2³² = 133934990803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138229951099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2402369 + ... + 2459234.

It is an arithmetic number, because the mean of its divisors is an integer number (34558712034).

Almost surely, 2^138229958099 is an apocalyptic number.

138229958099 is a deficient number, since it is larger than the sum of its proper divisors (4890037).

138229958099 is an equidigital number, since it uses as much as digits as its factorization.

138229958099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890036.

The product of its (nonzero) digits is 25194240, while the sum is 65.

The spelling of 138229958099 in words is "one hundred thirty-eight billion, two hundred twenty-nine million, nine hundred fifty-eight thousand, ninety-nine".