139648527083521 has 2 divisors, whose sum is σ = 139648527083522. Its totient is φ = 139648527083520.

The previous prime is 139648527083459. The next prime is 139648527083531. The reversal of 139648527083521 is 125380725846931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130054888113921 + 9593638969600 = 11404161^2 + 3097360^2 .

It is a cyclic number.

It is not a de Polignac number, because 139648527083521 - 2¹¹ = 139648527081473 is a prime.

It is a super-3 number, since 3×139648527083521³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (139648527083531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69824263541760 + 69824263541761.

It is an arithmetic number, because the mean of its divisors is an integer number (69824263541761).

It is a 1-persistent number, because it is pandigital, but 2⋅139648527083521 = 279297054167042 is not.

Almost surely, 2^{139648527083521} is an apocalyptic number.

It is an amenable number.

139648527083521 is a deficient number, since it is larger than the sum of its proper divisors (1).

139648527083521 is an equidigital number, since it uses as much as digits as its factorization.

139648527083521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 139648527083521 in words is "one hundred thirty-nine trillion, six hundred forty-eight billion, five hundred twenty-seven million, eighty-three thousand, five hundred twenty-one".