139289682505 has 4 divisors (see below), whose sum is σ = 167147619012. Its totient is φ = 111431746000.

The previous prime is 139289682479. The next prime is 139289682509. The reversal of 139289682505 is 505286982931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505286982931 = 5851 ⋅86359081.

It can be written as a sum of positive squares in 2 ways, for example, as 32851925001 + 106437757504 = 181251^2 + 326248^2 .

It is not a de Polignac number, because 139289682505 - 2²⁵ = 139256128073 is a prime.

It is a super-3 number, since 3×139289682505³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139289682505.

It is not an unprimeable number, because it can be changed into a prime (139289682509) 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, 13928968246 + ... + 13928968255.

It is an arithmetic number, because the mean of its divisors is an integer number (41786904753).

Almost surely, 2^139289682505 is an apocalyptic number.

It is an amenable number.

139289682505 is a deficient number, since it is larger than the sum of its proper divisors (27857936507).

139289682505 is an equidigital number, since it uses as much as digits as its factorization.

139289682505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27857936506.

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 139289682505 in words is "one hundred thirty-nine billion, two hundred eighty-nine million, six hundred eighty-two thousand, five hundred five".