778793148863 has 2 divisors, whose sum is σ = 778793148864. Its totient is φ = 778793148862.

The previous prime is 778793148841. The next prime is 778793148923. The reversal of 778793148863 is 368841397877.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-778793148863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (778793148163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389396574431 + 389396574432.

It is an arithmetic number, because the mean of its divisors is an integer number (389396574432).

Almost surely, 2^778793148863 is an apocalyptic number.

778793148863 is a deficient number, since it is larger than the sum of its proper divisors (1).

778793148863 is an equidigital number, since it uses as much as digits as its factorization.

778793148863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 341397504, while the sum is 71.

The spelling of 778793148863 in words is "seven hundred seventy-eight billion, seven hundred ninety-three million, one hundred forty-eight thousand, eight hundred sixty-three".