77798000918 has 8 divisors (see below), whose sum is σ = 127305819720. Its totient is φ = 35362727680.

The previous prime is 77798000911. The next prime is 77798000927. The reversal of 77798000918 is 81900089777.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77798000911) 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 3 ways as a sum of consecutive naturals, for example, 1768136363 + ... + 1768136406.

It is an arithmetic number, because the mean of its divisors is an integer number (15913227465).

Almost surely, 2^77798000918 is an apocalyptic number.

77798000918 is a deficient number, since it is larger than the sum of its proper divisors (49507818802).

77798000918 is a wasteful number, since it uses less digits than its factorization.

77798000918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536272782.

The product of its (nonzero) digits is 1778112, while the sum is 56.

The spelling of 77798000918 in words is "seventy-seven billion, seven hundred ninety-eight million, nine hundred eighteen", and thus it is an aban number.