138854015141 has 8 divisors (see below), whose sum is σ = 139536723480. Its totient is φ = 138172612608.

The previous prime is 138854015089. The next prime is 138854015161. The reversal of 138854015141 is 141510458831.

It can be written as a sum of positive squares in 4 ways, for example, as 21835972900 + 117018042241 = 147770^2 + 342079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138854015141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138854015161) 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, 112916 + ... + 538941.

It is an arithmetic number, because the mean of its divisors is an integer number (17442090435).

Almost surely, 2^138854015141 is an apocalyptic number.

It is an amenable number.

138854015141 is a deficient number, since it is larger than the sum of its proper divisors (682708339).

138854015141 is an equidigital number, since it uses as much as digits as its factorization.

138854015141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652903.

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 138854015141 in words is "one hundred thirty-eight billion, eight hundred fifty-four million, fifteen thousand, one hundred forty-one".