78741381863 has 2 divisors, whose sum is σ = 78741381864. Its totient is φ = 78741381862.

The previous prime is 78741381857. The next prime is 78741381871. The reversal of 78741381863 is 36818314787.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78741381863 - 2¹⁶ = 78741316327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78741381799 and 78741381808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78741321863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39370690931 + 39370690932.

It is an arithmetic number, because the mean of its divisors is an integer number (39370690932).

Almost surely, 2^78741381863 is an apocalyptic number.

78741381863 is a deficient number, since it is larger than the sum of its proper divisors (1).

78741381863 is an equidigital number, since it uses as much as digits as its factorization.

78741381863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 56.

The spelling of 78741381863 in words is "seventy-eight billion, seven hundred forty-one million, three hundred eighty-one thousand, eight hundred sixty-three".