1138420713061 has 2 divisors, whose sum is σ = 1138420713062. Its totient is φ = 1138420713060.

The previous prime is 1138420713013. The next prime is 1138420713163. The reversal of 1138420713061 is 1603170248311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622530468036 + 515890245025 = 789006^2 + 718255^2 .

It is an emirp because it is prime and its reverse (1603170248311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138420713061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138420713061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138420711061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569210356530 + 569210356531.

It is an arithmetic number, because the mean of its divisors is an integer number (569210356531).

Almost surely, 2^{1138420713061} is an apocalyptic number.

It is an amenable number.

1138420713061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138420713061 is an equidigital number, since it uses as much as digits as its factorization.

1138420713061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

Subtracting from 1138420713061 its sum of digits (37), we obtain a square (1138420713024 = 1066968²).

The spelling of 1138420713061 in words is "one trillion, one hundred thirty-eight billion, four hundred twenty million, seven hundred thirteen thousand, sixty-one".