78804247124387 has 2 divisors, whose sum is σ = 78804247124388. Its totient is φ = 78804247124386.

The previous prime is 78804247124359. The next prime is 78804247124399. The reversal of 78804247124387 is 78342174240887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78804247124387 - 2⁸ = 78804247124131 is a prime.

It is not a weakly prime, because it can be changed into another prime (78804247124327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39402123562193 + 39402123562194.

It is an arithmetic number, because the mean of its divisors is an integer number (39402123562194).

Almost surely, 2^{78804247124387} is an apocalyptic number.

78804247124387 is a deficient number, since it is larger than the sum of its proper divisors (1).

78804247124387 is an equidigital number, since it uses as much as digits as its factorization.

78804247124387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134873088, while the sum is 65.

The spelling of 78804247124387 in words is "seventy-eight trillion, eight hundred four billion, two hundred forty-seven million, one hundred twenty-four thousand, three hundred eighty-seven".