138413032361 has 4 divisors (see below), whose sum is σ = 138419734212. Its totient is φ = 138406330512.

The previous prime is 138413032357. The next prime is 138413032409. The reversal of 138413032361 is 163230314831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59136998761 + 79276033600 = 243181^2 + 281560^2 .

It is a cyclic number.

It is not a de Polignac number, because 138413032361 - 2² = 138413032357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138413032861) 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, 3319850 + ... + 3361283.

It is an arithmetic number, because the mean of its divisors is an integer number (34604933553).

Almost surely, 2^138413032361 is an apocalyptic number.

It is an amenable number.

138413032361 is a deficient number, since it is larger than the sum of its proper divisors (6701851).

138413032361 is an equidigital number, since it uses as much as digits as its factorization.

138413032361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701850.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 138413032361 in words is "one hundred thirty-eight billion, four hundred thirteen million, thirty-two thousand, three hundred sixty-one".