138140561017 has 8 divisors (see below), whose sum is σ = 145455882560. Its totient is φ = 130829716080.

The previous prime is 138140560993. The next prime is 138140561023. The reversal of 138140561017 is 710165041831.

It is a happy number.

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-138140561017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138140561917) 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, 1055709 + ... + 1179322.

It is an arithmetic number, because the mean of its divisors is an integer number (18181985320).

Almost surely, 2^138140561017 is an apocalyptic number.

It is an amenable number.

138140561017 is a deficient number, since it is larger than the sum of its proper divisors (7315321543).

138140561017 is a wasteful number, since it uses less digits than its factorization.

138140561017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238303.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 138140561017 in words is "one hundred thirty-eight billion, one hundred forty million, five hundred sixty-one thousand, seventeen".