78632245061 has 2 divisors, whose sum is σ = 78632245062. Its totient is φ = 78632245060.

The previous prime is 78632245001. The next prime is 78632245063. The reversal of 78632245061 is 16054223687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61417230625 + 17215014436 = 247825^2 + 131206^2 .

It is an emirp because it is prime and its reverse (16054223687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78632245061 - 2¹⁸ = 78631982917 is a prime.

Together with 78632245063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78632245063) 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, 39316122530 + 39316122531.

It is an arithmetic number, because the mean of its divisors is an integer number (39316122531).

Almost surely, 2^78632245061 is an apocalyptic number.

It is an amenable number.

78632245061 is a deficient number, since it is larger than the sum of its proper divisors (1).

78632245061 is an equidigital number, since it uses as much as digits as its factorization.

78632245061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 78632245061 in words is "seventy-eight billion, six hundred thirty-two million, two hundred forty-five thousand, sixty-one".