139656479009 has 8 divisors (see below), whose sum is σ = 143936411520. Its totient is φ = 135431068176.

The previous prime is 139656479003. The next prime is 139656479033. The reversal of 139656479009 is 900974656931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139656479009 - 2³⁶ = 70937002273 is a prime.

It is a super-3 number, since 3×139656479009³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139656479003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13625219 + ... + 13635464.

It is an arithmetic number, because the mean of its divisors is an integer number (17992051440).

Almost surely, 2^139656479009 is an apocalyptic number.

It is an amenable number.

139656479009 is a deficient number, since it is larger than the sum of its proper divisors (4279932511).

139656479009 is a wasteful number, since it uses less digits than its factorization.

139656479009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27260839.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 139656479009 in words is "one hundred thirty-nine billion, six hundred fifty-six million, four hundred seventy-nine thousand, nine".