79852139141 has 2 divisors, whose sum is σ = 79852139142. Its totient is φ = 79852139140.

The previous prime is 79852139123. The next prime is 79852139177. The reversal of 79852139141 is 14193125897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65410108516 + 14442030625 = 255754^2 + 120175^2 .

It is a cyclic number.

It is not a de Polignac number, because 79852139141 - 2¹⁰ = 79852138117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79852139141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79852139111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39926069570 + 39926069571.

It is an arithmetic number, because the mean of its divisors is an integer number (39926069571).

Almost surely, 2^79852139141 is an apocalyptic number.

It is an amenable number.

79852139141 is a deficient number, since it is larger than the sum of its proper divisors (1).

79852139141 is an equidigital number, since it uses as much as digits as its factorization.

79852139141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The spelling of 79852139141 in words is "seventy-nine billion, eight hundred fifty-two million, one hundred thirty-nine thousand, one hundred forty-one".