139670122561 has 4 divisors (see below), whose sum is σ = 139697158912. Its totient is φ = 139643086212.

The previous prime is 139670122541. The next prime is 139670122583. The reversal of 139670122561 is 165221076931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165221076931 = 709 ⋅233033959.

It is a cyclic number.

It is not a de Polignac number, because 139670122561 - 2⁹ = 139670122049 is a prime.

It is a super-3 number, since 3×139670122561³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139670122511) 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, 13510425 + ... + 13520758.

It is an arithmetic number, because the mean of its divisors is an integer number (34924289728).

Almost surely, 2^139670122561 is an apocalyptic number.

It is an amenable number.

139670122561 is a deficient number, since it is larger than the sum of its proper divisors (27036351).

139670122561 is an equidigital number, since it uses as much as digits as its factorization.

139670122561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27036350.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 139670122561 in words is "one hundred thirty-nine billion, six hundred seventy million, one hundred twenty-two thousand, five hundred sixty-one".