139443486655 has 16 divisors (see below), whose sum is σ = 183409354368. Its totient is φ = 100932804000.

The previous prime is 139443486643. The next prime is 139443486703. The reversal of 139443486655 is 556684344931.

It is a de Polignac number, because none of the positive numbers 2^k-139443486655 is a prime.

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 139443486655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5996301 + ... + 6019510.

It is an arithmetic number, because the mean of its divisors is an integer number (11463084648).

Almost surely, 2^139443486655 is an apocalyptic number.

139443486655 is a deficient number, since it is larger than the sum of its proper divisors (43965867713).

139443486655 is a wasteful number, since it uses less digits than its factorization.

139443486655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12016038.

The product of its digits is 37324800, while the sum is 58.

It can be divided in two parts, 1394434 and 86655, that added together give a square (1481089 = 1217²).

The spelling of 139443486655 in words is "one hundred thirty-nine billion, four hundred forty-three million, four hundred eighty-six thousand, six hundred fifty-five".