78096239839 has 2 divisors, whose sum is σ = 78096239840. Its totient is φ = 78096239838.

The previous prime is 78096239813. The next prime is 78096239843. The reversal of 78096239839 is 93893269087.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78096239839 - 2¹⁵ = 78096207071 is a prime.

It is a super-2 number, since 2×78096239839² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78096239869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39048119919 + 39048119920.

It is an arithmetic number, because the mean of its divisors is an integer number (39048119920).

Almost surely, 2^78096239839 is an apocalyptic number.

78096239839 is a deficient number, since it is larger than the sum of its proper divisors (1).

78096239839 is an equidigital number, since it uses as much as digits as its factorization.

78096239839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 78096239839 in words is "seventy-eight billion, ninety-six million, two hundred thirty-nine thousand, eight hundred thirty-nine".