139441545782069 has 2 divisors, whose sum is σ = 139441545782070. Its totient is φ = 139441545782068.

The previous prime is 139441545782059. The next prime is 139441545782107. The reversal of 139441545782069 is 960287545144931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86624437200625 + 52817108581444 = 9307225^2 + 7267538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139441545782069 is a prime.

It is a super-2 number, since 2×139441545782069² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139441545782009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69720772891034 + 69720772891035.

It is an arithmetic number, because the mean of its divisors is an integer number (69720772891035).

It is a 2-persistent number, because it is pandigital, and so is 2⋅139441545782069 = 278883091564138, but 3⋅139441545782069 = 418324637346207 is not.

Almost surely, 2^{139441545782069} is an apocalyptic number.

It is an amenable number.

139441545782069 is a deficient number, since it is larger than the sum of its proper divisors (1).

139441545782069 is an equidigital number, since it uses as much as digits as its factorization.

139441545782069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 139441545782069 in words is "one hundred thirty-nine trillion, four hundred forty-one billion, five hundred forty-five million, seven hundred eighty-two thousand, sixty-nine".