776661221102 has 8 divisors (see below), whose sum is σ = 1254606587976. Its totient is φ = 358459025112.

The previous prime is 776661221099. The next prime is 776661221197. The reversal of 776661221102 is 201122166677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 776661221102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14935792688 + ... + 14935792739.

It is an arithmetic number, because the mean of its divisors is an integer number (156825823497).

Almost surely, 2^776661221102 is an apocalyptic number.

776661221102 is a deficient number, since it is larger than the sum of its proper divisors (477945366874).

776661221102 is a wasteful number, since it uses less digits than its factorization.

776661221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29871585442.

The product of its (nonzero) digits is 84672, while the sum is 41.

Adding to 776661221102 its reverse (201122166677), we get a palindrome (977783387779).

The spelling of 776661221102 in words is "seven hundred seventy-six billion, six hundred sixty-one million, two hundred twenty-one thousand, one hundred two".