139143530117 has 4 divisors (see below), whose sum is σ = 142537274796. Its totient is φ = 135749785440.

The previous prime is 139143530083. The next prime is 139143530137. The reversal of 139143530117 is 711035341931.

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 43530232321 + 95613297796 = 208639^2 + 309214^2 .

It is a cyclic number.

It is not a de Polignac number, because 139143530117 - 2²² = 139139335813 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 (139143530137) 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, 1696872278 + ... + 1696872359.

It is an arithmetic number, because the mean of its divisors is an integer number (35634318699).

Almost surely, 2^139143530117 is an apocalyptic number.

It is an amenable number.

139143530117 is a deficient number, since it is larger than the sum of its proper divisors (3393744679).

139143530117 is an equidigital number, since it uses as much as digits as its factorization.

139143530117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393744678.

The product of its (nonzero) digits is 34020, while the sum is 38.

The spelling of 139143530117 in words is "one hundred thirty-nine billion, one hundred forty-three million, five hundred thirty thousand, one hundred seventeen".