138794543161 has 8 divisors (see below), whose sum is σ = 140434529760. Its totient is φ = 137156345568.

The previous prime is 138794543143. The next prime is 138794543207. The reversal of 138794543161 is 161345497831.

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 138794543161 - 2⁷ = 138794543033 is a prime.

It is a super-2 number, since 2×138794543161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138794543099 and 138794543108.

It is not an unprimeable number, because it can be changed into a prime (138794543101) 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, 290851 + ... + 601816.

It is an arithmetic number, because the mean of its divisors is an integer number (17554316220).

Almost surely, 2^138794543161 is an apocalyptic number.

It is an amenable number.

138794543161 is a deficient number, since it is larger than the sum of its proper divisors (1639986599).

138794543161 is an equidigital number, since it uses as much as digits as its factorization.

138794543161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894503.

The product of its digits is 2177280, while the sum is 52.

The spelling of 138794543161 in words is "one hundred thirty-eight billion, seven hundred ninety-four million, five hundred forty-three thousand, one hundred sixty-one".