78086025805331 has 2 divisors, whose sum is σ = 78086025805332. Its totient is φ = 78086025805330.

The previous prime is 78086025805309. The next prime is 78086025805367. The reversal of 78086025805331 is 13350852068087.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78086025805331 is a prime.

It is a super-2 number, since 2×78086025805331² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78086025885331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39043012902665 + 39043012902666.

It is an arithmetic number, because the mean of its divisors is an integer number (39043012902666).

Almost surely, 2^{78086025805331} is an apocalyptic number.

78086025805331 is a deficient number, since it is larger than the sum of its proper divisors (1).

78086025805331 is an equidigital number, since it uses as much as digits as its factorization.

78086025805331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 78086025805331 in words is "seventy-eight trillion, eighty-six billion, twenty-five million, eight hundred five thousand, three hundred thirty-one".