77508400168 has 16 divisors (see below), whose sum is σ = 147375128160. Its totient is φ = 38208366000.

The previous prime is 77508400147. The next prime is 77508400231. The reversal of 77508400168 is 86100480577.

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, 68228658 + ... + 68229793.

It is an arithmetic number, because the mean of its divisors is an integer number (9210945510).

Almost surely, 2^77508400168 is an apocalyptic number.

It is an amenable number.

77508400168 is a deficient number, since it is larger than the sum of its proper divisors (69866727992).

77508400168 is a wasteful number, since it uses less digits than its factorization.

77508400168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136458528 (or 136458524 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 77508400168 in words is "seventy-seven billion, five hundred eight million, four hundred thousand, one hundred sixty-eight".