77748268166 has 8 divisors (see below), whose sum is σ = 122760423480. Its totient is φ = 36828127008.

The previous prime is 77748268121. The next prime is 77748268177. The reversal of 77748268166 is 66186284777.

It is a happy number.

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 = 77748268099 and 77748268108.

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, 1023003491 + ... + 1023003566.

It is an arithmetic number, because the mean of its divisors is an integer number (15345052935).

Almost surely, 2^77748268166 is an apocalyptic number.

77748268166 is a deficient number, since it is larger than the sum of its proper divisors (45012155314).

77748268166 is a wasteful number, since it uses less digits than its factorization.

77748268166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046007078.

The product of its digits is 37933056, while the sum is 62.

The spelling of 77748268166 in words is "seventy-seven billion, seven hundred forty-eight million, two hundred sixty-eight thousand, one hundred sixty-six".