139757248678609 has 9 divisors (see below), whose sum is σ = 139865396224393. Its totient is φ = 139649184718132.

The previous prime is 139757248678577. The next prime is 139757248678627. The reversal of 139757248678609 is 906876842757931.

The square root of 139757248678609 is 11821897.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 139757248678609 - 2⁵ = 139757248678577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139757248678009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18430333632 + ... + 18430341214.

It is a 1-persistent number, because it is pandigital, but 2⋅139757248678609 = 279514497357218 is not.

Almost surely, 2^{139757248678609} is an apocalyptic number.

139757248678609 is the 11821897-th square number.

139757248678609 is the 5910949-th centered octagonal number.

It is an amenable number.

139757248678609 is a deficient number, since it is larger than the sum of its proper divisors (108147545784).

139757248678609 is an frugal number, since it uses more digits than its factorization.

139757248678609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18284 (or 9142 counting only the distinct ones).

The product of its (nonzero) digits is 7681443840, while the sum is 82.

The spelling of 139757248678609 in words is "one hundred thirty-nine trillion, seven hundred fifty-seven billion, two hundred forty-eight million, six hundred seventy-eight thousand, six hundred nine".