139865029613 has 2 divisors, whose sum is σ = 139865029614. Its totient is φ = 139865029612.

The previous prime is 139865029607. The next prime is 139865029673. The reversal of 139865029613 is 316920568931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139832619364 + 32410249 = 373942^2 + 5693^2 .

It is a cyclic number.

It is not a de Polignac number, because 139865029613 - 2⁴ = 139865029597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139865029673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69932514806 + 69932514807.

It is an arithmetic number, because the mean of its divisors is an integer number (69932514807).

Almost surely, 2^139865029613 is an apocalyptic number.

It is an amenable number.

139865029613 is a deficient number, since it is larger than the sum of its proper divisors (1).

139865029613 is an equidigital number, since it uses as much as digits as its factorization.

139865029613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 139865029613 in words is "one hundred thirty-nine billion, eight hundred sixty-five million, twenty-nine thousand, six hundred thirteen".