78896829793 has 2 divisors, whose sum is σ = 78896829794. Its totient is φ = 78896829792.

The previous prime is 78896829733. The next prime is 78896829797. The reversal of 78896829793 is 39792869887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40098861009 + 38797968784 = 200247^2 + 196972^2 .

It is a cyclic number.

It is not a de Polignac number, because 78896829793 - 2²⁹ = 78359958881 is a prime.

It is a super-2 number, since 2×78896829793² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78896829797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39448414896 + 39448414897.

It is an arithmetic number, because the mean of its divisors is an integer number (39448414897).

Almost surely, 2^78896829793 is an apocalyptic number.

It is an amenable number.

78896829793 is a deficient number, since it is larger than the sum of its proper divisors (1).

78896829793 is an equidigital number, since it uses as much as digits as its factorization.

78896829793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658409472, while the sum is 76.

The spelling of 78896829793 in words is "seventy-eight billion, eight hundred ninety-six million, eight hundred twenty-nine thousand, seven hundred ninety-three".