78213702803629 has 2 divisors, whose sum is σ = 78213702803630. Its totient is φ = 78213702803628.

The previous prime is 78213702803543. The next prime is 78213702803647. The reversal of 78213702803629 is 92630820731287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77763296722500 + 450406081129 = 8818350^2 + 671123^2 .

It is a cyclic number.

It is not a de Polignac number, because 78213702803629 - 2⁷ = 78213702803501 is a prime.

It is a super-2 number, since 2×78213702803629² (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 (78213702803699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39106851401814 + 39106851401815.

It is an arithmetic number, because the mean of its divisors is an integer number (39106851401815).

Almost surely, 2^{78213702803629} is an apocalyptic number.

It is an amenable number.

78213702803629 is a deficient number, since it is larger than the sum of its proper divisors (1).

78213702803629 is an equidigital number, since it uses as much as digits as its factorization.

78213702803629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 78213702803629 in words is "seventy-eight trillion, two hundred thirteen billion, seven hundred two million, eight hundred three thousand, six hundred twenty-nine".