68909774400 has 126 divisors (see below), whose sum is σ = 244921659762. Its totient is φ = 18375936000.

The previous prime is 68909774387. The next prime is 68909774429. The reversal of 68909774400 is 447790986.

It is a happy number.

68909774400 is a `hidden beast` number, since 6 + 89 + 0 + 97 + 74 + 400 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 14176236096 + 54733538304 = 119064^2 + 233952^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2378301 + ... + 2407100.

Almost surely, 2^68909774400 is an apocalyptic number.

68909774400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68909774400 is an abundant number, since it is smaller than the sum of its proper divisors (176011885362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68909774400 is a wasteful number, since it uses less digits than its factorization.

68909774400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785429 (or 4785411 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 68909774400 in words is "sixty-eight billion, nine hundred nine million, seven hundred seventy-four thousand, four hundred".