776803213494 has 144 divisors (see below), whose sum is σ = 2137204719936. Its totient is φ = 201638959200.

The previous prime is 776803213427. The next prime is 776803213507. The reversal of 776803213494 is 494312308677.

776803213494 is a `hidden beast` number, since 7 + 76 + 80 + 3 + 2 + 1 + 3 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 776803213494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15760549 + ... + 15809759.

It is an arithmetic number, because the mean of its divisors is an integer number (14841699444).

Almost surely, 2^776803213494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776803213494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068602359968).

776803213494 is an abundant number, since it is smaller than the sum of its proper divisors (1360401506442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

776803213494 is a wasteful number, since it uses less digits than its factorization.

776803213494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50871 (or 50861 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 776803213494 in words is "seven hundred seventy-six billion, eight hundred three million, two hundred thirteen thousand, four hundred ninety-four".