139305261645226 has 8 divisors (see below), whose sum is σ = 208958301673380. Its totient is φ = 69652494420768.

The previous prime is 139305261645203. The next prime is 139305261645247. The reversal of 139305261645226 is 622546162503931.

It is a Cunningham number, because it is equal to 11802765²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 139305261645225 + 1 = 11802765^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66919501 + ... + 68969776.

Almost surely, 2^{139305261645226} is an apocalyptic number.

139305261645226 is a deficient number, since it is larger than the sum of its proper divisors (69653040028154).

139305261645226 is a wasteful number, since it uses less digits than its factorization.

139305261645226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136401848.

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 139305261645226 in words is "one hundred thirty-nine trillion, three hundred five billion, two hundred sixty-one million, six hundred forty-five thousand, two hundred twenty-six".