138446180427 has 8 divisors (see below), whose sum is σ = 192620772864. Its totient is φ = 88284520808.

The previous prime is 138446180417. The next prime is 138446180437. The reversal of 138446180427 is 724081644831.

It is an interprime number because it is at equal distance from previous prime (138446180417) and next prime (138446180437).

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 138446180427 - 2¹² = 138446176331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138446180417) 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, 1003233123 + ... + 1003233260.

It is an arithmetic number, because the mean of its divisors is an integer number (24077596608).

Almost surely, 2^138446180427 is an apocalyptic number.

138446180427 is a deficient number, since it is larger than the sum of its proper divisors (54174592437).

138446180427 is a wasteful number, since it uses less digits than its factorization.

138446180427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006466409.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 138446180427 in words is "one hundred thirty-eight billion, four hundred forty-six million, one hundred eighty thousand, four hundred twenty-seven".