77814556803 has 12 divisors (see below), whose sum is σ = 112421497968. Its totient is φ = 51865897200.

The previous prime is 77814556801. The next prime is 77814556873. The reversal of 77814556803 is 30865541877.

It is a happy number.

77814556803 is a `hidden beast` number, since 7 + 7 + 8 + 1 + 4 + 556 + 80 + 3 = 666.

It is not a de Polignac number, because 77814556803 - 2¹ = 77814556801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77814556803.

It is not an unprimeable number, because it can be changed into a prime (77814556801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825648 + ... + 915053.

It is an arithmetic number, because the mean of its divisors is an integer number (9368458164).

Almost surely, 2^77814556803 is an apocalyptic number.

77814556803 is a deficient number, since it is larger than the sum of its proper divisors (34606941165).

77814556803 is a wasteful number, since it uses less digits than its factorization.

77814556803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745674 (or 1745671 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 77814556803 in words is "seventy-seven billion, eight hundred fourteen million, five hundred fifty-six thousand, eight hundred three".