77480477866 has 8 divisors (see below), whose sum is σ = 126786236544. Its totient is φ = 35218399020.

The previous prime is 77480477831. The next prime is 77480477903. The reversal of 77480477866 is 66877408477.

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

It is a junction number, because it is equal to n+sod(n) for n = 77480477798 and 77480477807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760919930 + ... + 1760919973.

It is an arithmetic number, because the mean of its divisors is an integer number (15848279568).

Almost surely, 2^77480477866 is an apocalyptic number.

77480477866 is a deficient number, since it is larger than the sum of its proper divisors (49305758678).

77480477866 is a wasteful number, since it uses less digits than its factorization.

77480477866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521839916.

The product of its (nonzero) digits is 88510464, while the sum is 64.

The spelling of 77480477866 in words is "seventy-seven billion, four hundred eighty million, four hundred seventy-seven thousand, eight hundred sixty-six".