78081743 has 2 divisors, whose sum is σ = 78081744. Its totient is φ = 78081742.

The previous prime is 78081737. The next prime is 78081761. The reversal of 78081743 is 34718087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78081743 - 2¹⁴ = 78065359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78081697 and 78081706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78081713) 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, 39040871 + 39040872.

It is an arithmetic number, because the mean of its divisors is an integer number (39040872).

Almost surely, 2^78081743 is an apocalyptic number.

78081743 is a deficient number, since it is larger than the sum of its proper divisors (1).

78081743 is an equidigital number, since it uses as much as digits as its factorization.

78081743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 78081743 is about 8836.3874405777. The cubic root of 78081743 is about 427.4150724446.

The spelling of 78081743 in words is "seventy-eight million, eighty-one thousand, seven hundred forty-three".